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采用机理建模方法，研究了丙烯在环管反应器中的液相本体聚合过程。
The liquid phase bulk propylene polymerization in loop reactor was simulated based on the polymerization mechanism.
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。
The polypropylene liquid bulking loops has a special structure and is an important device in the technological process.
某设备制造厂电机配水环管立缝在消除应力热处理后，熔合线附近出现裂纹。
A crack is found after SR heat treatment in the vertical welding fusion line for water distribution ring pipe of a electric machinery.
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