precision testing
| audiometer
| precision testing abbr. | |
| tech. | 精度检査 |
| audiometer abbr. | |
| gen. | 听度 计 |
| life.sc. од. | 听力计 |
| met. | 测听计 |
| oil | 测听器; 声频计; 听度计 |
| steel. | 声学化渣仪 |
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| 精度检査 | |||
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precision testing : 3 phrases in 1 subject |
| Technology | 3 |