security management是什么意思 security management怎么读
security management的用法和样例
- It is an urgent task to make clear the current situation and problems on pert safety management under the new systems especially on the control of dangerous cargos handling.
摸清新体制下港口安全管理现状及存在的问题，特别是危险货物的监管问题是港口安全管理的迫切任务。
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