Pressure Pipe Unit Type Test Supervision Administration...
型式试验监督管理规则。
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；
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；
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