The measurement of the speed characteristic is an important detecting item for h. V. switch.

高压开关的速度特性测量是高压开关的基本特性的重要检测项目。

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The measurement of the speed characteristic is an important detecting item for h. V. switch.

高压开关的速度特性测量是高压开关的基本特性的重要检测项目。

youdao