4283| 6
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病患與殘疾人座椅移动装置 |
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点评
叫平行机构,汽车双A臂非平行也不是梯形,特例把你搞迷糊了
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小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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