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xflhf 发表于 2013-7-12 10:48 static/image/common/back.gif * k6 P |7 k/ Q; B6 }. @' `这也叫胡乱画?谦虚过度就是骄傲
zhenglei1938 发表于 2013-7-18 18:55 static/image/common/back.gif 1 r9 c: _9 \# X8 w9 t是外球面轴承座,丝杆用2个锁紧螺母消除轴向间隙
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