The advantage of keeping all of these layers in one group is that I can use one master mask to cut out mullions and define the Windows.
这样单独成组的优势就是我可以用一个主要蒙版来划分竖档和定义窗口。
This paper investigates the mask master initiatively and discusses the design and manufacture method of the primary master, working master and working plate in concrete terms.
本文对荫罩母版进行了初步探讨，并对原始母版、工作母版和工作底版的设计与制作进行了具体的论述。
Shadow mask is an important part of a color picture tube, while the design and manufacture of mask master is the key in making shadow mask.
荫罩是彩色显象管的重要部件，而制造荫罩的关键在于设计和制造荫罩母版。
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