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齿轮
2 topics with this tag
骑猪兜风
· 10/27/2016
Archive
罗尔斯·罗伊斯成功测试更高效的航空齿轮箱
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0
200962
骑猪兜风
· 1/14/2016
Archive
靠微粒子推动的新型微齿轮问世 为制造自动微机器开辟新途径
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0
200845
内容加载中
骑猪兜风· 1/14/2016