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| 71. | strain measuring instrument |
| 应变仪 |
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| 72. | remote transmitting gauge |
| 遥测仪 |
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| 73. | rebound apparatus |
| 回弹仪 |
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| 74. | focusing instrument |
| 调焦仪 |
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| 75. | bearing instrument |
| 方位仪 |
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| 76. | current meter |
| 流速仪 |
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| 77. | acoustic impedance meter |
| 声阻抗仪 |
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| 78. | net sounder |
| 网情仪 |
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| 79. | equatorial telescope |
| 赤道仪 |
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| 80. | production logger |
| 生产测井仪 |
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