The furnace pipe in cracking reactor is an important part of ethylene unit.
裂解反应器炉管是乙烯装置中的重要设备部件。
The experimental unit for process control is equipped with an inter-unit connection pipe;
所述过程控制实验单元设置有 单元间连接管；
Pressure Pipe Unit Type Test Supervision Administration...
型式试验监督管理规则。
Pressure Pipe Unit Type Test Supervision Administration...
型式试验监督管理规则。
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