您要查找的是不是：
- 槍管RIFLE線barrel RIFLE
- 在線in-line
- 薄片捲成的槍管laminated barrel
- 四槍管four-gun tube
- 布線wiring
- 周線contour
- 在線的on-line
- 別管no matter (who/what etc.)
- ph.1. 槍管鋸短的獵槍sawn-off shotgun
- 零線zero curve
- 只管(adv) no need to think about; by all means
- 這槍能發出看不見的射線。The gun can fire invisible rays.
- 米線rice stick
- 流管flow passage
- 流線streamline
- 圓管circular tube
- 保險管protective tube
- 輪廓線contour line
- 針管needle tube
- 標線gage mark
