 |
handhole
| nipple
| cap
| handhole | |
| gen. | 孔 |
| hydroel.st. | 探孔; 筛眼; 注人口 |
| met. | 注入口 |
| oil | 手孔 |
| nipple | |
| met. | 管接头; 连接短管 内保护环 |
| cap | |
| archit. | 盖 |
| |||
| 小，人，手，探,观察孔 | |||
| 探孔; 筛眼; 注人口 | |||
| 注入口 | |||
| 手孔 | |||
| 手工掏槽; 检査孔 | |||
|
handhole nipple cap : 21 phrases in 3 subjects |
| Compressors | 4 |
| Rail transport | 1 |
| Technology | 16 |
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