The reactor pressure vessel composed of spherical top and lower heads, upper and lower flanges, bolts, cylinder and two O-rings, as a static indeterminate system has been studied.
本文将反应堆压力壳的球顶盖、上下法兰、螺栓、筒体及双道O形环作为一个超静定系统进行了应力和变形分析。
O. M. Laser U-100 in the treatment of urinary tract calculi, and to introduce a new method of improving lithotripsy efficiency of upper ureteral calculi.
目的探讨u - 100双频激光碎石治疗尿路结石的有效性和安全性及提高输尿管上段结石碎石效果的新方法。
O. is a tunnel that connects the upper Chambers of the heart - the right atrium and the left atrium.
卵圆孔未闭会导致心脏上部腔体，即左心房和右心房之间存在一条通道连接。
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