| Subject | English | Chinese |
| hydrol. | middle thread of channel | 中泓线 |
| tech. | thread of channel | 河道主流线 |
| hydroel.st. | thread of channel | 中泓线 (stream) |
| hydroel.st. | thread of channel | 主溜线河面最大流速线 |
| construct. | thread of channel | 主流中泓，主溜线河面最大流速的联线 |
| tech. | thread of channel | 河道中泓主流 |
| tech. | thread of channel | 中泓 (线) |