四、管道与管接头(pipeline and pipe connection) 有了管道和各种管接头，才能把气动控制元件、气动执行元件以及辅助元件等连接成一个完整的气动控制系统，因此，实际应用中，管道...
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Germany RBT import external thread needle valve can be equipped with stainless steel welded pipe, and pipeline butt welding connection, but also through the outer nut removing the valve.
品牌：进口外螺纹针型阀可配带不锈钢焊接管，能与管道直接对焊连接，也可通过外螺母拆卸阀门。
Then combined pipe-line theory, the accumulator's integrated mathematical model with incurvate and strange diameter series connection pipeline is built.
然后结合管道理论研究得出了带有弯曲管路、异径串联连接管路的蓄能器数学模型。
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