The chair has a ratchet below it to adjust the height.
这把椅子下面有一个棘轮来调整高度。
No ratchet clauses - rent can go down!
无棘轮条款—租金可以下调！
Everybody expects to be above average, so you get this ratchet effect.
而每个人都期望超越平均水平，这样就产生了棘轮效应。
Of course, founders should negotiate hard to avoid the highly dilutive full-ratchet.
当然创始人应当为避免高稀释性的比例保护进行艰苦的谈判。
This is known as Muller's ratchet.
这就是所谓的穆勒的棘轮。
Single side safety control, arm locks with tooth type ratchet, multi-safety device, more reliable.
单边控制保险机构，齿轮锁臂装置，多重保险设计，更加安全。
Single side safety control, arm locks with tooth type ratchet, multi-safety device, more reliable.
单边控制保险机构，齿轮锁臂装置，多重保险设计，更加安全。
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