The rotationally symmetrical flange facilitates mounting.

这个旋转对称便于安装。

This event is rotationally held in different cities in China.

该项活动每年在国内不同的城市轮流举办。

The practical formulas for the rotationally symmetrical cylinders and cones are derived.

对于回转柱面和锥面导出了实用公式。

Using this model a rotationally resolved spectrum of SF_6 at 20K has been obtained for the first time.

用此模型，首次获得SF_6分子低温条件下（20K）的可转动分辨的吸收光谱和荧光光谱。

Objective To study the clinical results of surgery for rotationally and vertically unstable pelvis fracture.

目的探讨旋转垂直不稳定型骨盆骨折手术治疗的临床疗效。