nominal ball diameter
常见例句
- It's suitable for the small caliber valve nominal diameter: airproof test and strength test of DN15/100 flange type, through-type gate valve, cut-off valve and ball valve etc.
適用於小口逕閥門通逕：DN15/100法蘭式、直通式牐閥，截止閥，球閥等閥門的密封測試和強度測試。 返回 nominal ball diameter