This paper firstly conducted functional needs analysis for semantic modeling in virtual assembly operations, and then put forward the definition of assembly semantics.
首先对交互虚拟装配操作中语义建模的功能需求进行了分析，在此基础上提出装配语义的定义。
The auditor needs to determine that the hazard analysis is being conducted with the necessary rigour.
审核员需确定危害分析是否在严格程序下实施的。
Have you conducted a thorough needs assessment and learner analysis?
你是否成功进行了需求分析及学员分析？
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