ZSFD型对夹式信号蝶阀是由对夹式蝶阀及电控装置等组成。

The ZSFD wafer Signal butterfly valve consists of the wafer butterfly valve and the electric control device.

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ZSFD型对夹式信号蝶阀是由对夹式蝶阀及电控装置等组成。

The ZSFD wafer Signal butterfly valve consists of the wafer butterfly valve and the electric control device.

youdao