First, through the optimization of circuit design, matching line separation, ground line board design;
一是通过优化电路设计、配线分离，包括含接地线的线路板设计；
But having taken them on board has not, he thinks, invalidated his line of research.
不过他觉得，接受这些批评不代表他研究的方向是错误的。
It is a specialized enterprise to manufacture the Gypsum Board Production Line, Iron Wire Production.
这是一个专门的企业生产的石膏板生产线，生产铁丝。
Development of recording device on-board for confirming the line signal;
本文研制开发了一套车辆运行工况记录装置。
Development of recording device on-board for confirming the line signal;
本文研制开发了一套车辆运行工况记录装置。
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