塑料压力管在其适用范围内，有足够的承压能力和刚性，满足实际使用的需要。
The plastics pressure pipe has enough pressure bearing capacity and rigidity to meet the actual use requirement within its proper range.
单管或多管试漏时，因打压介质充填量小，若管束有漏点，易于从压力表上快速显现出压降。
Single - or multiple leakage test, by suppressing media filling quantity is small, if the tube bundle leakage, easy to from the pressure gauge on the fast show pressure drop.
用PRO - E软件对进气弯管，带分流叶片的叶轮及有叶片扩压器进行了实体建模。
Using software PRO-E to build the model of the impeller, diffuser with blade, entering air elbow, volute.
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