Relative measures were taken to the floating ring on the low pressure side of LP cylinder and corresponding sludge oil collector, to ensure stable operation of the freezing machine.
通过对冰机低压缸低压侧浮环及其对应的污油捕集器采取相应的措施，保证冰机稳定运行。
2
The new PN collector and BD_1 depressant for floating lead sulphide mineral from lead and zinc oxide ore are introduced in this paper.