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81. | finishing tooth |
| 精密切齿 |
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82. | precision resistor |
| 精密电位器 |
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83. | precision rolling |
| 精密轧制 |
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84. | precise distillation |
| 精密蒸馏 |
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85. | precision torsion balance |
| 精密扭力天平 |
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86. | accurate complete equipment |
| 精密成套设备 |
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87. | Precision Turning |
| 精密车削 |
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88. | exacting limits |
| 精密极限 |
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89. | precision watch |
| 精密表 |
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90. | precise fractionating |
| 精密分馏 |
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