Sprinkler pump shell cracks, or impeller, leaf damage, or seal damage, will affect the degree of vacuum, water pumping, water pressure is too small or the phenomenon.
洒水车水泵泵壳出现裂纹、或者叶轮、倒叶损坏、或者水封破损，都会影响真空度，出现水抽不上来，或者水压过小的现象。
The vacuum degree at tailrace adit varies most significantly at the lowest downstream water level and improves gradually along with the rising of downstream water level.
当下游水位最低时，尾水管进口真空变化最明显，随着下游水位的上升，尾水管进口真空度逐渐改善。
The application result after transform showed that the vacuum degree of the filter was obviously higher, and the qualified deoiling wax yield increased by 5 percentages.
改造后的应用结果表明，过滤机的真空度明显提高，在保证脱油蜡质量合格的情况下，产品收率提高了5个百分点。
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