真空带式过滤机和带式压滤机是污泥脱水的常用设备，但两者各有优缺点。
Vacuum belt filter and belt press filter are the usual equipments of oil sludge dehydrating. But they have respective virtues and shortcomings.
真空带式过滤机和带式压滤机是污泥脱水的常用设备，但两者各有优缺点。
Vacuum belt filter and belt press filter are the usual equipments of oil sludge dehydrating. But they have respective virtues and shortcomings.
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