The electrical conductivity of Beijing dolomite and limestone has been studied by means of a high pressure apparatus of solid medium piston cylinder type.

利用固体介质活塞圆筒式高压容器测量白云岩与石灰岩的电导率。

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Main structured items are: JDQM full face mask, air supply valve, pressure regulator valve, backboard, pressure gauge, alarming whistle, medium pressure tube, carbon fiber composite cylinder, etc.

主要结构有：JDQM全面罩、供气阀、减压阀、背板、压力表、报警哨、中压管、碳纤维复合气瓶等。

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