马特:没问题!一桶环呢,肯定能套着!
Matt: No problem! With this stack of hoops I'm sure to get one!
介绍一种采用扫描方式测量锥面环、桶面环等活塞环外圆轮廓参数的测量仪。
An instrument that measures the outer profile parameters of piston rings such as conical rings, tubbish rings by scanning is introduced.
两个推进剂罐由每个末端的圆顶,桶和环组成。
The two propellant tanks are composed of domes on either end, barrels, and rings.
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