久久久久久久久久久久久久久,国产一级 片内射毛片中出i,污污污网站免费观看视频,性一交一乱一乱一视频,一级a一级a国产爰片免费免免

　  礦(kuang)山(shan)(shan)篩(shai)(shai)選(xuan)分(fen)(fen)(fen)級(ji)機械經常要用(yong)(yong)(yong)篩(shai)(shai)網(wang)做分(fen)(fen)(fen)級(ji)篩(shai)(shai)選(xuan)處理,一(yi)般煤場(chang)礦(kuang)山(shan)(shan)使用(yong)(yong)(yong)的(de)(de)是65錳鋼編織篩(shai)(shai)網(wang),礦(kuang)山(shan)(shan)篩(shai)(shai)網(wang)選(xuan)用(yong)(yong)(yong)規(gui)格有8mm、10mm絲徑,網(wang)孔有1公(gong)(gong)(gong)分(fen)(fen)(fen)、1.5公(gong)(gong)(gong)分(fen)(fen)(fen)、2公(gong)(gong)(gong)分(fen)(fen)(fen)、2.5公(gong)(gong)(gong)分(fen)(fen)(fen)、3公(gong)(gong)(gong)分(fen)(fen)(fen)、3.5公(gong)(gong)(gong)分(fen)(fen)(fen)、4公(gong)(gong)(gong)分(fen)(fen)(fen)等規(gui)格,主(zhu)要用(yong)(yong)(yong)于震動篩(shai)(shai)機篩(shai)(shai)選(xuan)出(chu)小的(de)(de)礦(kuang)石(shi)煤礦(kuang)便于進行(xing)下(xia)一(yi)步的(de)(de)利用(yong)(yong)(yong)和提純.礦(kuang)篩(shai)(shai)網(wang)的(de)(de)使用(yong)(yong)(yong)標準(zhun)不僅(jin)表(biao)現出(chu)耐磨的(de)(de)特性突出(chu)的(de)(de)展現出(chu)礦(kuang)篩(shai)(shai)網(wang)的(de)(de)高強度的(de)(de)使用(yong)(yong)(yong)標準(zhun).

　　礦山篩網(wang)的(de)(de)高(gao)強(qiang)度(du)使用(yong)性是(shi)(shi)錳(meng)鋼(gang)(gang)(gang)(gang)絲(si)使用(yong)性能的(de)(de)突出表現(xian)形式(shi),篩網(wang)的(de)(de)剛性特(te)點(dian)(dian)是(shi)(shi)剛性強(qiang)表現(xian)在(zai)耐(nai)磨性能強(qiang).在(zai)此要(yao)重點(dian)(dian)講一下(xia)65錳(meng)鋼(gang)(gang)(gang)(gang)絲(si)是(shi)(shi)黑(hei)(hei)顏色的(de)(de)又黑(hei)(hei)又亮(liang)的(de)(de)表現(xian)形式(shi)是(shi)(shi),45號鋼(gang)(gang)(gang)(gang)絲(si)是(shi)(shi)灰黑(hei)(hei)色的(de)(de)這是(shi)(shi)從顏色上分(fen)辨(bian)錳(meng)鋼(gang)(gang)(gang)(gang)絲(si)的(de)(de).有的(de)(de)廠家用(yong)45號鋼(gang)(gang)(gang)(gang)絲(si)代替(ti)65錳(meng)鋼(gang)(gang)(gang)(gang)絲(si)一定要(yao)有利的(de)(de)辨(bian)別(bie)真偽.