一段关于弯管的内径的测量要求英文求翻译? The body inside diameter should be measured in the centre of ≤30 bends, at three equally spaced positions on >30 bends. At each measurement position, the diameter should be measured at 45 intervals around the circumference. The different between the maximum and minimum diameter measured at each position should not be greater than 1% of the average measured diameter at that position.查看更多3个回答 . 4人已关注