介绍了二次送电开关的结构、工作原理及优点。

The composition and working principle, advantages of secondary power switch were introduced.

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主要利用有限元方法对架空送电线路杆塔进行结构强度和结构动力学特性分析。

In paper, the structural static strength and dynamic characteristic of pole? Tower of aerial power? Delivery line are analyzed and discussed with the finite element analysis.

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我们的柴油船用发电机高效，结构紧凑，输送电力平稳。我们提供的柴油发电机，可以应对几乎任何负载要求。

Our diesel Marine generators are efficient, compact and deliver smooth power on demand. We offer diesel generators to handle nearly any load requirement.

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