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當承(cheng)受地震(zhen)作用(yong)(yong)時(shi),應(ying)采用(yong)(yong)雙螺(luo)母固(gu)定,或采用(yong)(yong)其它有效(xiao)防止(zhi)松動的(de)措施,但地腳螺(luo)栓...
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單(dan)頭螺栓(shuan)與雙(shuang)頭螺栓(shuan)區別,35crmoa雙(shuang)頭螺栓(shuan),國(guo)標35CrMoa雙(shuang)頭螺栓(shuan),...
u型(xing)螺栓(shuan)(shuan)規格型(xing)號表,gb4321標準u型(xing)螺栓(shuan)(shuan),8.8級u型(xing)螺栓(shuan)(shuan)生(sheng)產公司,懸挑...