The main valve, globe or angle pattern, is diaphragm actuated, hydraulically operated.
主阀，截止阀或角阀结构，采用隔膜驱动，液压操作。
It was a hydraulically operated bridge, using steam to power the enormous pumping engines.
它是一座水压控制的桥梁，利用蒸汽来驱动巨大的泵。
A small conic breaker equipped with hydraulically operated output regulator has been developed for crushing glass raw materials. Some structural features of the breaker are described.
研制成一台玻璃厂适用的小型圆锥破碎机，该机带有液压装置调节出料口大小。介绍了它的构造特点。
A small conic breaker equipped with hydraulically operated output regulator has been developed for crushing glass raw materials. Some structural features of the breaker are described.
研制成一台玻璃厂适用的小型圆锥破碎机，该机带有液压装置调节出料口大小。介绍了它的构造特点。
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