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B. water-filled Pump start before the pump casing and suction pipe must be full of water that is because of the presence of air vacuum pumping the population can not be formed and maintained.

b。陈籍水泵在启动以前，泵壳和吸水管内必须先布满水，这是因为有空气存在的情况下，泵吸人口真空无法形成和保持。

Maintain the liquid suction pipe as short as possible.

保持吸液管线尽可能短。

5The relation between the self-priming time and the diameter of suction pipe is modified.The above results can be used to direct the design of self-priming pumps and improvement of self-priming performance.

上述研究结果可以作为自吸泵设计的参考，为改善自吸泵的自吸性能提供了全面的参考依据。

Rotary Installation Import solenoid valve particularly suitable for use in the system need to drop the small places (such as low temperature system, suction pipe solenoid valves).

旋转安装进口电磁阀特别适合使用在系统中需压降小的地方（如低温系统中吸气管路电磁阀）。

The ability of the filters the request should be combined with filters installed in the system location to consider, if installed in the suction pipe on the road, its filtering capabilities should be two times higher than pump flow.

对过滤器过滤能力的要求，应结合过滤器在系统中的安装位置来考虑，如果安装在吸水管路上，其过滤能力应为泵流量的2倍以上。

The pump mounting height should be allowed to smoke on a high vacuum suction pipe loss deduction after the head, the rest of that part of the value, it is highly absorbent to overcome the actual terrain.

而水泵安装高度应该是允许吸上真空高度扣除了吸水管道损失扬程以后，所剩下的那部分数值，它要克服实际地形吸水高度。

Chimney is not only a tail pipe to obtain suction in electricity factory,but also an important equipment of controlling air pollution and protecting the environment.

通过研究有关电厂烟囱高度合理性方法，指出影响污染物落地浓度的主要影响因素，并从气象和环境空气影响角度对不同高度烟囱合理性进行检验。

Self-priming height should not exceed the stated number of 4.5～5.5m,and the suction pipe should not be over 10 meters long

自吸高度不能超过规定值4.5～5.5米，吸人管长度不超过10米

Prepare the spray liquid inside a clean container and put the suction pipe into the container.

在洁净的容器内调配喷涂液，然后将吸液管放入盛喷涂液

Sewage pump suction pipe and outlet pipe flow of not less than 0.7m / s, and should not be greater than 2.0m / s.

排污泵吸水管和出水管流速不应小于0.7m/s，并不宜大于2.0m/s。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。