您要查找的是不是：
- 单J形坡口single-J groove
- 单面J形坡口single-J groove
- 双面J形坡口double-J groove
- j形袋J Shaped Pocket
- 单面复合U形坡口single compound angle groove
- J形钩J-hook headgear
- J形导管J-stent
- Ｘ形坡口double-V groove
- J形J-shaped
- j形箱j box
- 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
- J形曲线J-shaped curve
- 背面坡口underside groove
- J形手杖J-line cane
- J形天线J-antenna
- 坡口机beveling machine
- J形结肠袋colic J pouch
- 不开坡口square groove
- 硬J形导丝stiff J-guide wire
- 反J形分布reverse J-distribution
