1) nominal diameter of roller

滚子公称直径
2) nominal diameter of a needle roller

滚针公称直径
3) nominal diameter

公称直径
1.
The characteristic of piping design is standardization and in series,and the standardization of the series of nominal diameter,outside diameter and thickness of pipe is the basis of the standardization of pipe fittings.
其中管道公称直径、外径和壁厚系列的标准化是管道元件标准化的基础。
4) nominal ball diameter

公称球直径
5) nominal diameter

公称通径,通称直径
6) nominal length of roller

滚子公称长度
补充资料:滚子
1.指轮子。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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