spin axis

基本解釋

Since that pulls mass closer to the planet's spin axis, it causes the planet to rotate faster – just as an ice skater spins faster when she pulls her arms towards her body.
由于質(zhì)量朝地球旋轉(zhuǎn)軸靠攏，這就導(dǎo)致地球旋轉(zhuǎn)速度加快 --- 就像一個速度滑冰選手，當她把胳膊向身體收攏時就會旋轉(zhuǎn)得更快。
The shaft is structured to optionally move in the offset cam, and the display panel unit is structured to rotating around a spin axis when the shaft moves in the offset cam.
該軸構(gòu)造成在偏心凸輪內(nèi)選擇性地移動，并且顯示面板單元構(gòu)造成當軸在偏心凸輪內(nèi)移動時繞旋轉(zhuǎn)軸線旋轉(zhuǎn)。
ip.com
Over the next century, the subtle effect is expected to cause the northern pole of Earth's spin axis to shift by roughly 1.5 centimetres per year in the direction of Alaska and Hawaii.
據(jù)報道，地球北極端極軸的移動是朝向阿拉斯加方向每年移動1.5厘米。
leuxue.blog.163.com

One way to think about it, if we want to use a classical analogy, which often helps to give us an idea of what's going on, is the spin of an electron, we can picture it rotating on its own axis.
如果我們用一個，經(jīng)典的比喻來考慮它的話，這經(jīng)常會幫助我們建立起一些概念，就是我們可以把電子的，自旋想象是它繞著軸自轉(zhuǎn)。
麻省理工公開課 - 化學原理課程節(jié)選
So you can see, if it's spinning on its own axis in this direction we'd call it spin up, where as this way it would be what we call spin down.
你們可以看到，如果它繞自己的軸朝這個方向轉(zhuǎn),我們就說它是自旋朝上，這個方向我們叫它自旋朝下。
麻省理工公開課 - 化學原理課程節(jié)選

In particular, every electron has its own magnetic field aligned with the axis of its spin.
ECONOMIST: How to record a memory on a wire
Engadget had a chance to give Axis a quick spin, and we largely like what we see, even if we'd say it's not for everyone.
ENGADGET: Yahoo Axis on desktop, iOS unifies your bookmarks, makes the web visual (hands-on)