Its fire resistant mechanism was discussed and application on the plastic board and composition pipe introduced.
讨论了其防火机理,介绍了其在塑料板材、复合管材上的应用.
This paper systematically introduces the composition and principle of a self-design and manufactured miniature NC drill machine's control system used for processing printing circuit board.
本文系统地介绍了自行设计与制造的加工印刷电路板微型数控钻床控制系统的组成及原理,并对各部分功能进行了分析。
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