The polypropylene liquid bulking loops has a special structure and is an important device in the technological process.
聚丙烯环管反应器是一种结构特殊的设备，也是工艺流程中十分重要的设备。
Introduces the character, fundamental, technological process and system layout of jet well ground water lowering device.
简要介绍了射流井点降水装置的特点、基本原理以及装置的工艺流程及系统布置。
It analyzed the technological characteristics of plastics article of leading paper device of printer, and introduced the structure of injection mould, the gate design, and the work process of mould.
分析了打印机导纸器塑件工艺特点，介绍了注塑模结构、浇口设计方案和模具工作过程。
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