rotation axis

基本解释

The key point for re-constructing rotation surface is setting up rotation axis and generatrix.
旋转面重建的关键是确定旋转轴和母线。
Positive values for the angle rotate the object clockwise if you look along the positive rotation axis.
角度为正值，则表示若您顺着正旋转轴方向观察，对象是按顺时针旋转的。
The paper proposes a new method of using the ultrasonic-speed turbine as a power sourse and using the magnetic suspension bearing as the main back-up bearing for the rotation axis.
本文提出用永磁材料制作的永磁悬浮轴承作高速旋转轴的主要支承，轴流式超音涡转作回转轴的驱动动力源。

So it's very important to be keeping in mind that any time you see a double bond, you have a pi bond there, so you're not going to see any rotation around the bond axis.
所以你们要记住,任何时候你们看到一个双键，这里面有π键，你们不会看到关于键轴的任何转动。
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Based on the Phoenix lander, the craft is tasked with giving us a peek beneath the planet's surface, armed with tools that include a geodetic instrument from the Jet Propulsion Laboratory, which will be used to calculate Mars' rotation axis, a seismic wave sensor and a subsurface heat probe, to measure the planet's internal temperature.
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Because Jupiter's axis of rotation does not quite line up with its magnetic axis, the moons that orbit the planet feel such a fluctuating magnetic force.
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Today motion sensing has progressed to being three-axes of acceleration, and three axis of rotation (technically called gyroscopes).
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旋转轴
The scanning mechanical device, including a bracket and the rotation axis,driven by a stepper motor.
扫描机械装置包括支架和旋转轴，由一个步进电机驱动。
机械工程
旋转轴
转动轴