Design a craft process card finally, work preface card.
最后设计出工艺过程卡，工序卡片。
So, we must pay high attention to the press solid work preface.
因此，必须高度重视压实工作。
If the work is a book, so safety is the preface.
如果说工作是一本书，那么安全就是序言。
In the preface, the author elaborates the motive, object, method and meaning of this work.
在前言中阐述了本次课题的研究动机、对象、方法及意义。
In the preface, the author elaborates the motive, object, method and meaning of this work.
在前言中阐述了本次课题的研究动机、对象、方法及意义。
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