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xflhf 发表于 2013-7-12 10:48 static/image/common/back.gif% f' w3 F0 W& x 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.gif3 R" o. |/ w; @% ]; A% J5 a9 s8 Q 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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