nominal pipe size
常见例句
- A terminal shall be so designed that it cannot be inadvertently pushed onto a pipe or fitting of the same nominal size in such a manner that the terminal outlet free area is restricted.
接线端应该设计到位才能保证不会无缘无故的被塞进管子内，或者，采用相同的公称尺寸，这样一种方式才能确保接线端自由出口处不会受到限制。
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