scroll-case
| vent
| scroll case | |
| auto. | 蜗旋 外壳 |
| ecol. | 蜗壳 |
| hydroel.st. | 蜗壳 |
| vent | |
| cloth. | 衩口 |
| hydroel.st. | 通风孔 |
| interntl.trade. | 出路; 销路 |
| met. | 孔; 放气孔; 排气孔 |
| mount. | 通气孔 |
| space | 排气道 |
| tech. | 排气 |
| |||
| 蜗旋状外壳 | |||
| 蜗壳水轮机的 | |||
| 蜗壳 | |||
| 螺旋形箱; 涡壳 (水轮机) | |||
|
scroll-case : 19 phrases in 4 subjects |
| Ecology | 2 |
| Electronics | 1 |
| Hydroelectric power stations | 7 |
| Technology | 9 |