the a-level pipeline valve的意思|示意
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a级管道阀门
the a-level pipeline valve的网络常见释义
a级管道阀门 A级管道阀门
the a-level pipeline valve相关例句
The regulating valve is a very important component in the control system of oil pipeline , and its flow property will affect the control level.
调节阀是输油管道控制系统的重要组成部分，其流量特性对控制质量影响很大。