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JQ-691射孔取心控制仪自投产以来进行了多次改进。本文是在JQ-75型取心控制线路的基础上,对其中同步置零电路的改进作了介绍。
The JQ-691 Perforating Centrifuge has undergone several improvements since its commissioning. This article is on the basis of JQ-75 type coring control circuit, introduces the improvement of synchronous zero setting circuit.