As a principal member to participate in "research on convenient air transportation engineering" and two dozen research projects.
作为主要成员参加《便捷航空运输工程研究》等二十多项科研项目。
No professional assembly tools to be needed, convenient and suitable for engineering.
免专业装配工具,使用方便,易于工程使用。
It is convenient for engineering use.
它在工程使用上是相当方便的。
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