佛山市南海富大精密機械有限公司帶你了解關于東莞小型鉆攻中心機原理的(de)(de)(de)(de)(de)信息,鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)主(zhu)(zhu)要(yao)優(you)勢(shi)的(de)(de)(de)(de)(de)主(zhu)(zhu)軸(zhou)(zhou)馬達(da)和(he)穩定(ding)的(de)(de)(de)(de)(de)進(jin)(jin)給(gei)(gei)系統(tong)。主(zhu)(zhu)軸(zhou)(zhou)馬達(da)是鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)關(guan)鍵部(bu)件(jian)(jian)(jian)，其(qi)工(gong)(gong)(gong)作速度(du)快(kuai)(kuai)(kuai)，能(neng)提(ti)(ti)高(gao)工(gong)(gong)(gong)件(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)精度(du)。高(gao)速進(jin)(jin)給(gei)(gei)系統(tong)。鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)在(zai)工(gong)(gong)(gong)藝條件(jian)(jian)(jian)下(xia)可(ke)(ke)(ke)(ke)以(yi)(yi)提(ti)(ti)供較(jiao)長(chang)時(shi)(shi)間的(de)(de)(de)(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong)周期。的(de)(de)(de)(de)(de)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)能(neng)力。鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)主(zhu)(zhu)要(yao)由(you)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)和(he)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)兩(liang)部(bu)分組成。主(zhu)(zhu)軸(zhou)(zhou)馬達(da)是鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)關(guan)鍵部(bu)件(jian)(jian)(jian)。其(qi)工(gong)(gong)(gong)作速度(du)快(kuai)(kuai)(kuai)，能(neng)提(ti)(ti)高(gao)工(gong)(gong)(gong)件(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)精度(du)。主(zhu)(zhu)軸(zhou)(zhou)馬達(da)在(zai)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)過程(cheng)中(zhong)可(ke)(ke)(ke)(ke)以(yi)(yi)提(ti)(ti)供較(jiao)長(chang)時(shi)(shi)間的(de)(de)(de)(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong)周期。的(de)(de)(de)(de)(de)進(jin)(jin)給(gei)(gei)系統(tong)。鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)是一種(zhong)多功能(neng)的(de)(de)(de)(de)(de)機(ji)(ji)(ji)(ji)械(xie)設(she)備，結(jie)合了鉆(zhan)(zhan)(zhan)(zhan)(zhan)床(chuang)和(he)攻(gong)絲機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)特點，可(ke)(ke)(ke)(ke)以(yi)(yi)地進(jin)(jin)行孔(kong)(kong)(kong)加(jia)(jia)(jia)工(gong)(gong)(gong)和(he)攻(gong)絲操作。通過調(diao)(diao)整工(gong)(gong)(gong)藝參數(shu)，可(ke)(ke)(ke)(ke)以(yi)(yi)實現(xian)單(dan)孔(kong)(kong)(kong)或(huo)多孔(kong)(kong)(kong)連續加(jia)(jia)(jia)工(gong)(gong)(gong)，滿足不同直(zhi)徑(jing)和(he)深度(du)的(de)(de)(de)(de)(de)孔(kong)(kong)(kong)加(jia)(jia)(jia)工(gong)(gong)(gong)需求。鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)具(ju)有的(de)(de)(de)(de)(de)主(zhu)(zhu)軸(zhou)(zhou)馬達(da)和(he)穩定(ding)的(de)(de)(de)(de)(de)進(jin)(jin)給(gei)(gei)系統(tong)，可(ke)(ke)(ke)(ke)快(kuai)(kuai)(kuai)速準確地完成孔(kong)(kong)(kong)加(jia)(jia)(jia)工(gong)(gong)(gong)。鉆(zhan)(zhan)(zhan)(zhan)(zhan)攻(gong)中(zhong)心(xin)(xin)機(ji)(ji)(ji)(ji)可(ke)(ke)(ke)(ke)以(yi)(yi)在(zai)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)、加(jia)(jia)(jia)工(gong)(gong)(gong)、裝夾(jia)等環節(jie)進(jin)(jin)行快(kuai)(kuai)(kuai)速的(de)(de)(de)(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong)，并可(ke)(ke)(ke)(ke)根據(ju)不同的(de)(de)(de)(de)(de)孔(kong)(kong)(kong)加(jia)(jia)(jia)工(gong)(gong)(gong)條件(jian)(jian)(jian)，自動調(diao)(diao)整機(ji)(ji)(ji)(ji)床(chuang)的(de)(de)(de)(de)(de)位置和(he)操作。

東莞小型鉆攻中心機原理,鉆攻中心(xin)(xin)(xin)機(ji)還(huan)可(ke)(ke)以進行多孔(kong)或(huo)多孔(kong)的(de)(de)加(jia)(jia)工(gong)，提高(gao)(gao)加(jia)(jia)工(gong)效率和(he)質量。鉆攻中心(xin)(xin)(xin)機(ji)采用了新一代(dai)的(de)(de)高(gao)(gao)速(su)、低成本、大容(rong)量的(de)(de)鉆機(ji)，能(neng)(neng)夠(gou)滿(man)足各(ge)種類型鉆床和(he)加(jia)(jia)工(gong)中心(xin)(xin)(xin)對設備要求(qiu)。它(ta)(ta)具有強勁(jing)(jing)的(de)(de)主軸馬(ma)達(da)和(he)穩定(ding)的(de)(de)進給系統。它(ta)(ta)配備了強勁(jing)(jing)的(de)(de)主軸馬(ma)達(da)和(he)穩定(ding)器，可(ke)(ke)快(kuai)速(su)準確(que)地完成孔(kong)加(jia)(jia)工(gong)。它(ta)(ta)可(ke)(ke)以進行鉆孔(kong)、加(jia)(jia)工(gong)、切(qie)割等多種加(jia)(jia)工(gong)過程，具有良(liang)好的(de)(de)穩定(ding)性(xing)和(he)可(ke)(ke)靠(kao)性(xing)。鉆攻中心(xin)(xin)(xin)機(ji)還(huan)具備高(gao)(gao)速(su)旋轉(zhuan)的(de)(de)能(neng)(neng)力(li)。鉆攻中心(xin)(xin)(xin)機(ji)采用了的(de)(de)主軸馬(ma)達(da)，能(neng)(neng)夠(gou)快(kuai)速(su)準確(que)地完成孔(kong)加(jia)(jia)工(gong)。它(ta)(ta)可(ke)(ke)以進行多種類型的(de)(de)加(jia)(jia)工(gong)。它(ta)(ta)配備了強勁(jing)(jing)的(de)(de)主軸馬(ma)達(da)和(he)穩定(ding)器，能(neng)(neng)夠(gou)快(kuai)速(su)準確(que)地完成孔(kong)加(jia)(jia)工(gong)。

鉆(zhan)攻(gong)中(zhong)(zhong)心(xin)機具有(you)優良的(de)操作性能和穩定的(de)工(gong)(gong)藝參數，可廣(guang)泛應用于各類行(xing)業。在鉆(zhan)研(yan)鉆(zhan)床(chuang)、鉆(zhan)床(chuang)加(jia)工(gong)(gong)和加(jia)工(gong)(gong)中(zhong)(zhong)，可以根據(ju)不(bu)(bu)同(tong)的(de)加(jia)工(gong)(gong)需(xu)求(qiu)來(lai)選擇適合(he)(he)自己(ji)的(de)方(fang)式。在實際生產(chan)過程(cheng)中(zhong)(zhong)，如何(he)選擇適合(he)(he)自己(ji)加(jia)工(gong)(gong)要(yao)(yao)求(qiu)、不(bu)(bu)同(tong)尺寸和不(bu)(bu)同(tong)厚(hou)(hou)度等(deng)特點的(de)鉆(zhan)刀是(shi)一(yi)個非常(chang)(chang)重(zhong)要(yao)(yao)且(qie)又(you)很(hen)難解決(jue)的(de)題。鉆(zhan)研(yan)鉆(zhan)床(chuang)是(shi)一(yi)個系(xi)統工(gong)(gong)程(cheng)，需(xu)要(yao)(yao)不(bu)(bu)同(tong)的(de)加(jia)工(gong)(gong)方(fang)法(fa)，不(bu)(bu)同(tong)的(de)加(jia)工(gong)(gong)技術。在實際生產(chan)過程(cheng)中(zhong)(zhong)，如何(he)選擇適合(he)(he)自己(ji)加(jia)工(gong)(gong)要(yao)(yao)求(qiu)、不(bu)(bu)同(tong)厚(hou)(hou)度和不(bu)(bu)同(tong)厚(hou)(hou)度等(deng)特點的(de)鉆(zhan)刀是(shi)一(yi)個非常(chang)(chang)重(zhong)要(yao)(yao)且(qie)又(you)很(hen)難解決(jue)的(de)題。

小型鉆攻中心機原理,鉆(zhan)攻(gong)中(zhong)心(xin)機(ji)采用(yong)了新型(xing)(xing)主(zhu)軸馬達(da)(da)、強勁的(de)(de)主(zhu)軸馬達(da)(da)和(he)(he)穩定的(de)(de)刀(dao)(dao)具(ju)(ju)。這(zhe)些主(zhu)軸馬達(da)(da)可以在(zai)同(tong)類(lei)設備(bei)(bei)上(shang)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)，如鉆(zhan)刀(dao)(dao)、刀(dao)(dao)具(ju)(ju)和(he)(he)切(qie)(qie)削刀(dao)(dao)具(ju)(ju)等。該(gai)機(ji)采用(yong)了新的(de)(de)主(zhu)軸馬達(da)(da)，可以提高工(gong)(gong)(gong)(gong)件(jian)精(jing)度(du)和(he)(he)生產(chan)效率。鉆(zhan)攻(gong)中(zhong)心(xin)機(ji)采用(yong)了新型(xing)(xing)的(de)(de)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)質(zhi)(zhi)量(liang)(liang)控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)。該(gai)控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)是一(yi)種(zhong)全(quan)新的(de)(de)控(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統。它能(neng)夠(gou)(gou)在(zai)同(tong)類(lei)設備(bei)(bei)上(shang)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。這(zhe)些控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)能(neng)夠(gou)(gou)根(gen)據(ju)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)不(bu)同(tong)要(yao)求(qiu)對鉆(zhan)攻(gong)中(zhong)心(xin)機(ji)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。該(gai)控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)能(neng)夠(gou)(gou)在(zai)同(tong)類(lei)設備(bei)(bei)上(shang)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)，如銑床(chuang)、刨床(chuang)和(he)(he)切(qie)(qie)削刀(dao)(dao)具(ju)(ju)等。該(gai)控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)還(huan)具(ju)(ju)有的(de)(de)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)質(zhi)(zhi)量(liang)(liang)。該(gai)控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)能(neng)夠(gou)(gou)根(gen)據(ju)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)不(bu)同(tong)要(yao)求(qiu)對鉆(zhan)攻(gong)中(zhong)心(xin)機(ji)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。這(zhe)種(zhong)系(xi)統還(huan)支持新型(xing)(xing)的(de)(de)刀(dao)(dao)具(ju)(ju)。這(zhe)種(zhong)刀(dao)(dao)具(ju)(ju)的(de)(de)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)精(jing)度(du)和(he)(he)生產(chan)效率高于同(tong)類(lei)設備(bei)(bei)，能(neng)夠(gou)(gou)使鉆(zhan)攻(gong)中(zhong)心(xin)機(ji)在(zai)不(bu)同(tong)工(gong)(gong)(gong)(gong)件(jian)上(shang)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。該(gai)系(xi)統還(huan)能(neng)夠(gou)(gou)根(gen)據(ju)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)不(bu)同(tong)要(yao)求(qiu)對鉆(zhan)攻(gong)中(zhong)心(xin)機(ji)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。該(gai)控(kong)(kong)制(zhi)(zhi)(zhi)器(qi)還(huan)支持新型(xing)(xing)的(de)(de)刀(dao)(dao)具(ju)(ju)。這(zhe)種(zhong)刀(dao)(dao)具(ju)(ju)可以在(zai)不(bu)同(tong)的(de)(de)切(qie)(qie)削刀(dao)(dao)具(ju)(ju)上(shang)進(jin)行(xing)(xing)(xing)(xing)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。

cnc鉆攻中心機維修,鉆(zhan)(zhan)(zhan)攻(gong)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)機(ji)的(de)(de)(de)(de)操作(zuo)(zuo)是(shi)一(yi)種(zhong)(zhong)率(lv)(lv)、高生產效率(lv)(lv)和(he)低成本。它具(ju)有(you)率(lv)(lv)和(he)低生產效率(lv)(lv)。鉆(zhan)(zhan)(zhan)攻(gong)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)機(ji)的(de)(de)(de)(de)主(zhu)(zhu)軸(zhou)馬(ma)達(da)和(he)主(zhu)(zhu)軸(zhou)進(jin)給系統，能夠實現的(de)(de)(de)(de)鉆(zhan)(zhan)(zhan)孔能力。在(zai)孔加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)，由于主(zhu)(zhu)軸(zhou)馬(ma)達(da)和(he)進(jin)給系統的(de)(de)(de)(de)調節(jie)作(zuo)(zuo)用(yong)，可(ke)(ke)(ke)(ke)以(yi)(yi)使(shi)鉆(zhan)(zhan)(zhan)床(chuang)具(ju)有(you)更(geng)大(da)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)效率(lv)(lv)。在(zai)鉆(zhan)(zhan)(zhan)研(yan)(yan)(yan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)機(ji)上，采(cai)(cai)(cai)(cai)用(yong)多個孔加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)方(fang)式。這(zhe)(zhe)(zhe)些(xie)方(fang)法(fa)(fa)可(ke)(ke)(ke)(ke)以(yi)(yi)根(gen)(gen)據需要(yao)(yao)(yao)(yao)(yao)(yao)選(xuan)(xuan)擇(ze)適(shi)當數(shu)量(liang)。鉆(zhan)(zhan)(zhan)孔中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)機(ji)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)時(shi)(shi)間(jian)可(ke)(ke)(ke)(ke)以(yi)(yi)根(gen)(gen)據孔加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)的(de)(de)(de)(de)需要(yao)(yao)(yao)(yao)(yao)(yao)而調節(jie)，也可(ke)(ke)(ke)(ke)以(yi)(yi)根(gen)(gen)據鉆(zhan)(zhan)(zhan)床(chuang)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)速度的(de)(de)(de)(de)需要(yao)(yao)(yao)(yao)(yao)(yao)而調節(jie)。在(zai)主(zhu)(zhu)軸(zhou)馬(ma)達(da)和(he)進(jin)給系統中(zhong)(zhong)(zhong)(zhong)，由于主(zhu)(zhu)軸(zhou)馬(ma)達(da)、進(jin)給系統與鉆(zhan)(zhan)(zhan)機(ji)之間(jian)存在(zai)著相互連接(jie)和(he)配合作(zuo)(zuo)用(yong)，所(suo)以(yi)(yi)在(zai)鉆(zhan)(zhan)(zhan)研(yan)(yan)(yan)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)采(cai)(cai)(cai)(cai)用(yong)這(zhe)(zhe)(zhe)些(xie)方(fang)法(fa)(fa)是(shi)非常(chang)必(bi)要(yao)(yao)(yao)(yao)(yao)(yao)的(de)(de)(de)(de)。鉆(zhan)(zhan)(zhan)研(yan)(yan)(yan)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)機(ji)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)時(shi)(shi)間(jian)可(ke)(ke)(ke)(ke)以(yi)(yi)根(gen)(gen)據需要(yao)(yao)(yao)(yao)(yao)(yao)而調節(jie)。在(zai)鉆(zhan)(zhan)(zhan)研(yan)(yan)(yan)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)采(cai)(cai)(cai)(cai)用(yong)這(zhe)(zhe)(zhe)些(xie)方(fang)法(fa)(fa)是(shi)非常(chang)必(bi)要(yao)(yao)(yao)(yao)(yao)(yao)的(de)(de)(de)(de)。在(zai)鉆(zhan)(zhan)(zhan)研(yan)(yan)(yan)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)，采(cai)(cai)(cai)(cai)用(yong)這(zhe)(zhe)(zhe)些(xie)方(fang)法(fa)(fa)是(shi)非常(chang)必(bi)要(yao)(yao)(yao)(yao)(yao)(yao)的(de)(de)(de)(de)。在(zai)孔加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)，采(cai)(cai)(cai)(cai)用(yong)這(zhe)(zhe)(zhe)種(zhong)(zhong)方(fang)法(fa)(fa)是(shi)非常(chang)必(bi)要(yao)(yao)(yao)(yao)(yao)(yao)的(de)(de)(de)(de)。為了保(bao)證鉆(zhan)(zhan)(zhan)床(chuang)具(ju)有(you)更(geng)大(da)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)能力和(he)更(geng)率(lv)(lv)，需要(yao)(yao)(yao)(yao)(yao)(yao)選(xuan)(xuan)擇(ze)適(shi)當數(shu)量(liang)。在(zai)孔加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)中(zhong)(zhong)(zhong)(zhong)心(xin)(xin)機(ji)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)時(shi)(shi)間(jian)可(ke)(ke)(ke)(ke)以(yi)(yi)根(gen)(gen)據需要(yao)(yao)(yao)(yao)(yao)(yao)而調節(jie)，也可(ke)(ke)(ke)(ke)以(yi)(yi)根(gen)(gen)據鉆(zhan)(zhan)(zhan)床(chuang)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)速度的(de)(de)(de)(de)需要(yao)(yao)(yao)(yao)(yao)(yao)而調節(jie)。在(zai)孔加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)采(cai)(cai)(cai)(cai)用(yong)這(zhe)(zhe)(zhe)種(zhong)(zhong)方(fang)法(fa)(fa)是(shi)非常(chang)必(bi)要(yao)(yao)(yao)(yao)(yao)(yao)的(de)(de)(de)(de)。鉆(zhan)(zhan)(zhan)研(yan)(yan)(yan)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)采(cai)(cai)(cai)(cai)用(yong)這(zhe)(zhe)(zhe)種(zhong)(zhong)方(fang)法(fa)(fa)是(shi)非常(chang)必(bi)要(yao)(yao)(yao)(yao)(yao)(yao)的(de)(de)(de)(de)。在(zai)孔加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程(cheng)(cheng)中(zhong)(zhong)(zhong)(zhong)采(cai)(cai)(cai)(cai)用(yong)這(zhe)(zhe)(zhe)種(zhong)(zhong)方(fang)法(fa)(fa)是(shi)非常(chang)必(bi)要(yao)(yao)(yao)(yao)(yao)(yao)的(de)(de)(de)(de)。為了保(bao)證鉆(zhan)(zhan)(zhan)床(chuang)具(ju)有(you)更(geng)率(lv)(lv)和(he)更(geng)低效率(lv)(lv)，需要(yao)(yao)(yao)(yao)(yao)(yao)選(xuan)(xuan)擇(ze)適(shi)當數(shu)量(liang)。