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管道内底
 管道内底
gen. invert
archit. invert
| 标高
 标高
hydroel.st. altitude; datum mark; elevation; level; spot level
space scalar height; scale height

to phrases
管道内底
archit. invert (管道内壁最低点)
tech. invert
管道内底
gen. invert
管道内底: 8 phrases in 2 subjects
Architecture3
Technology5