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| 21. | geological instrumentations |
| 地质仪器 |
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| 22. | These instrument are the same as those . |
| 这些仪器和那些仪器一个样。 |
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| 23. | This instrument is more useful than that one . |
| 这台仪器比那台仪器有用。 |
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| 24. | therapeutic equipments |
| 治疗仪器 |
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| 25. | balloon-borne instrument |
| 气球运载仪器; 球载仪器 |
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| 26. | psychological instruments |
| 心理学仪器 |
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| 27. | expendable instrument |
| 不回收式仪器;投弃式仪器 |
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| 28. | drawing instruments |
| 绘图仪器 |
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| 29. | seismic instrumentation |
| 地震仪器 |
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| 30. | testing instrument |
| 试验仪器 |
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