工字平尺
工(gong)字(zi)平(ping)尺(chi)按/T7977-99標準制(zhi)造,材料為HT250,工(gong)作表(biao)面采用(yong)刮(gua)研或jingmi磨削(xue)工(gong)藝。工(gong)字(zi)平(ping)尺(chi)用(yong)于機床(chuang)檢驗(yan)中(zhong)檢驗(yan)不(bu)平(ping)度(du)和(he)不(bu)直度(du)兩個(ge)工(gong)作面是配合塊(kuai)規,千分尺(chi),水...
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