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关注：1
2013-05-23 12:21
求翻译：As for the flat sections 16a of the opening 16 and 8a of the tubular body 8 of the collar 3, each flat portion 18a of the groove 18 corresponds to chord of a circle segment whereof the deflection represents approximately 5% of the radius of the circular peripheral surfaces of the bottom of the groove 18.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
As for the flat sections 16a of the opening 16 and 8a of the tubular body 8 of the collar 3, each flat portion 18a of the groove 18 corresponds to chord of a circle segment whereof the deflection represents approximately 5% of the radius of the circular peripheral surfaces of the bottom of the groove 18.
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