WORKHEAD: Part of a machine that helps position, hold, and drive the rotation of the product.

爪盘：车床上用来帮助定位、夹持以及驱动转动产品的部分。

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Butterfly valve through the valve shaft rotation to drive the rotation of a disc-shaped disc, to open and close a valve, cut off from the main pipe and throttle with.

进口蝶阀是指通过阀轴旋转来带动一个圆盘形的蝶板的转动，达到开启与关闭的一种阀门，在管道上主要起切断和节流用。

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The article introduces the mechanical and hydraulic configuration of rotation drive system and describes the control concepts on the rotation, compensation and synchronization of the manipulator.

介绍液压式径锻操作机旋转驱动的机械结构和液压结构，描述操作机旋转、旋转补偿以及旋转补偿同步的自动控制原理。

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Specifically, an Obama victory will stoke fear of higher taxes on dividends and ordinary income, and drive a rotation out of investment grade and high-yield corporate bonds and into municipal bonds.

FORBES: Why You Should Buy Bonds, Especially If Obama Wins