The establishment and existing problems of metallurgy model standard for an aeroengine are introduced.
介绍了某型航空发动机冶金型号标准的编制情况及其尚存在的问题。
This article point out the obviously existing problems of present budget management on the basis of analyzing organization situation of budget, establishment of budget.
本文在分析大庆油田总医院集团的预算组织现状、现行预算的编制情况基础上,指出了现行预算管理中存在的突出问题。
The establishment of reaction kinetic models on molecular scale is very difficult for many complex reaction systems existing in petroleum processing.
石油加工过程中存在大量的复杂反应体系,建立这些过程的分子级的动力学模型十分困难。
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