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| 倒置式回声测深仪 | |||
| 倒置回声测深仪 | |||
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| 反向回声测深仪; 反回声测深仪; 倒置回声测深仪 | |||
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| 反向【倒置】式回声测深仪 | |||
| inverted echo -sounder: 3 phrases in 3 subjects |
| Earth sciences | 1 |
| Engineering geology | 1 |
| Navigation | 1 |
|
| |||
| 倒置式回声测深仪 | |||
| 倒置回声测深仪 | |||
| |||
| 反向回声测深仪; 反回声测深仪; 倒置回声测深仪 | |||
| |||
| 反向【倒置】式回声测深仪 | |||
| inverted echo -sounder: 3 phrases in 3 subjects |
| Earth sciences | 1 |
| Engineering geology | 1 |
| Navigation | 1 |