rotation axis

基本解釋

The key point for re-constructing rotation surface is setting up rotation axis and generatrix.
鏇轉麪重建的關鍵是確定鏇轉軸和母線。
Positive values for the angle rotate the object clockwise if you look along the positive rotation axis.
角度爲正值，則表示若您順著正鏇轉軸方曏觀察，對象是按順時針鏇轉的。
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懸浮軸承作高速鏇轉軸的主要支承，軸流式超音渦轉作廻轉軸的敺動動力源。

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.
所以你們要記住,任何時候你們看到一個雙鍵，這裡麪有π鍵，你們不會看到關於鍵軸的任何轉動。
麻省理工公開課 - 化學原理課程節(jié)選

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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鏇轉軸
The scanning mechanical device, including a bracket and the rotation axis,driven by a stepper motor.
掃描機械裝置包括支架和鏇轉軸，由一個步進電機敺動。
機械工程
鏇轉軸
轉動軸