The laser head can dolly move, up and down move, rotary move. The Z axis apply precision motor organ, it is better for medium mould repairing.

激光头可前后、上下移动，可以旋转。Z轴采用精密电动升降机构，更适合一些中型模具的修补。

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Rotary sprayers use gear driven or impact hammer mechanisms to rotate the spray head in a circle.

使用旋转式喷雾器齿轮驱动或影响锤机制，旋转一圈的喷头。

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And then, the mathematics model was firstly set up to analyze the force that the rotary control head endured when the preventer installed aslant.

并在此基础上通过建立力学数学模型完成旋转控制头在安装偏斜的情况下的动力学分析。

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At the same time a steel arm with a rotary pick head plucks lower-volume pills from their respective tubes.

FORBES: Drug Lord

The incoming Archer administration discovered that City Hall still had rotary telephones, and that the head of the Information and Technology Services Department had no computer.

ECONOMIST: Detroit