本文以三层电梯为设计对象，结合三垦vm 06系列恒转矩高性能变频器，开发出一套交流双速的PLC电梯控制系统。

In this paper, three elevators for the design of objects, combined with Sanken VM06 series of high-performance constant torque converter, developed a two-speed exchange of PLC elevator control system.

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澳大利亚就是这种双速经济的最好例子。

Australia will be a prime example of such a two-speed economy.

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而现在这些人还要担心双速欧元区的出现。

Now they are fretting about a two-speed euro zone as well.

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