The curriculum design using Siemens S7-200 programmable logic controller to prepare the two-tier system of automatic control elevator.

本课程设计利用西门子s7 - 200可编程控制器编写的两层电梯自动控制系统。

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An automatic means to prepare an index.

一种自动准备索引(自动标引)的方法。

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Automatic tablet press is used to prepare steel slag samples for X-ray spectrofluorimetry at Masteel's No. 4 steel group.

采用自动压片机压制马钢四钢轧总厂的钢渣样，样片用于X荧光光谱仪分析。

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The complete return was delayed because investment information required to prepare it wasn't available by April 15, and the Romneys got an automatic extension from the Internal Revenue Service.

WSJ: Romney Releases More Tax Details