Aimed at the need of CATV network bi-directional transform, designed a kind of bi-directional amplifier with succinct circuit, cheap cost.

针对有线电视网双向改造的需要，设计了一种电路简洁、性能优良、成本低廉的双向放大器。

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Based on the method of six sequence fault component, this paper analyses the performance of zero sequence directional relay on double circuit line on the same pole (DLSP).

文中用六序分量法分析了同杆双回线上零序功率方向继电器的性能。

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According the operation mechanics of the SCES system, its main circuit containing bi-directional DC-AC-DC converter was designed and its unified model was built.

从超级电容器储能系统的运行机理出发，设计了含双向DC - AC - DC变换器的超级电容器储能系统主电路结构，并建立了其统一模型。

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In its ruling, the Eighth Circuit denied an application from the NLRB to enforce its decision in a dispute between American Directional Boring Inc. and a St.

FORBES: Flood Of Remands Begins In Voided NLRB Cases

American Directional Boring, case number 09-1194, in the U.S. Court of Appeals for the Eighth Circuit.

FORBES: Flood Of Remands Begins In Voided NLRB Cases