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| 铅底纲; 干线 | |||
| 测深绳 | |||
| 铅锤线 | |||
| 铅垂线 | |||
| 测绳; 出油管; 出油管线 | |||
| 蓝线; 接受管; 铅线; 铅锤索; 水砣绳; 岀油管线; 测深线; 测深索; 测铅绳; 伯顿氏线; 水深测量的测深绳 | |||
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| 铅锤线 | |||
| lead line: 8 phrases in 2 subjects |
| Nautical | 1 |
| Technology | 7 |
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