第1题
调节阀相当于一个可以调节的局部阻力件,随着阀门开启程度的不同,阻力也不同,从而达到对流量和压力参数进行调节的目的。Regulating valve is equivalent to a local resistance can be adjusted, with the degree of valve opening, resistance is different, so as to achieve the purpose of regulating the flow and pressure parameters.
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