The filling process of mixture in the detonation tube is one important part of operation circle of PDE.
爆震室内混合物的填充过程是PDE工作循环中的重要一环。
The changes in management concept and operation will be heuristic to the business circle.
这种经营意识、经营方法的转变对商界有一定的启发。
Coking at the inlet of large gas line to fractionator has been effectively prevented by setting up steam circle pipes under appropriate operation conditions.
控制合适的操作条件，在大油气管线进分馏塔入口处增加蒸汽环管，可以有效防止结焦。
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