The cracking condition of hydraulically controlled check valve in locking circuit is studied via problems encountered in practice and a method for correct selection is presented.
通过实践中发现的问题，分析液控单向阀在锁紧回路中的开锁条件，提出正确选配办法。
It can be used to check the flexibility of the convection section when the feed and operation condition changes, and it can be used to design the cracking furnace of different scale and feedstocks.
可以很好地用来判断现有裂解炉对流段对改变原料和操作条件的适应性和设计各种规模和适应各种原料的裂解炉。
According to the relation of fracture toughness and stress intensity factor, the cracking similarity condition of induced joint in structural model is established.
根据断裂韧度和应力强度因子的关系，建立了结构模型中诱导缝的开裂相似条件。
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