The preparation method has the advantages of simple operation, short production cycle, low cost and high raw material utilization ratio.
本发明中的制备方法操作简单，生产周期短，成本低，原料利用率高。
In the industry of mechanical manufacturing, packing is to research how to lay parts on the stuff to achieve higher material utilization ratio and better process technics.
在机械制造行业里，排样主要研究零件的布局，目的是提高材料利用率，同时满足加工工艺的要求。
The material utilization ratio is the core of technology indexes.
技术指标的核心是材料利用率。
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