... size of node 节点的大小 size of pipe and tubing 管材尺寸; 管道标称尺寸; 管子公称尺寸 size of population 母体量; 总数大小 ...
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介绍了本标准的编制过程及对有缝管材尺寸偏差、力学性能、表面质量等方面的规定。
The requirements of dimensions, mechnical properties, surface quality on aluminium alloy seam tubes are explained.
采用此法生产PA12管材自动化程度较高，不仅可提高生产效率，而且可保持管材尺寸的稳定性，并降低劳动强度。
The high automatic production line could not only promote production efficiency, but also keep the dimensions steady and lower the labor intensity.
研究者只要根据管材尺寸、物料基本性能数据，按照该范式建立三维模型通过计算便能设计出该种机头合理的结构参数。
According to the dimensions and the material data of the pipe, the researchers can create the three dimensional FEM model and get the appropriate geometric parameters of the die after compute.
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