working reference materials的意思|示意
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工作参考资料
working reference materials的网络常见释义
二级标准物质 二级标准物质(working reference materials)是用与一级标准物质开展比较测量的办法或一级标准物质的定值办法定值，其不稳定度和均匀性未达到一级标准物质水平，能满足一般测...
working reference materials相关例句
This paper introduces briefly how to select weldding-materials, technical reference and working sequence during the weldding process.
简要介绍了钢结构框架焊接过程中材料选择、工艺参数的确定及作业顺序。