您要查找的是不是：
- 单面复合U形坡口single compound angle groove
- 单U形坡口single-U groove
- 双面U形坡口double U-groove
- 口mouth
- 一口readily
- 双U形坡口double-U groove
- 单面J形坡口single-J groove
- U形河曲内的土地在有这样的弯管的河里的地The land within such a bend of a river.
- U形U-shaped
- 中厚板大坡口单面焊接头的焊接分析Analysis on one-side welded joint with wild gap in mild-thickness steel plate
- 基于非协调强化假定应变单元的U形薄壳渡槽槽身受力分析Analysis of the Stress for U-Shaped Thin Shell Aqueduct Based on Strain Unit of Non-Harmonious Strengthening Supposition
- 背面坡口underside groove
- U形急转弯a hairpin turn
- 坡口机beveling machine
- 保安链U形夹check chain clevis
- 不开坡口square groove
- 管子已被弯成了U形。The pipe had been turned in a U-shaped curve.
- V型坡口V groove
- U形梁U-shaped beam
- 正坡口positive bevel
