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81. | step discharge tube |
| 分级放电管 |
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82. | multistep ignition |
| 分级点火 |
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83. | progressive gauge |
| 分级规 |
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84. | vibration separation |
| 振动分级 |
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85. | fibre classification |
| 纤维分级 |
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86. | separation by width |
| 宽度分级 |
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87. | site classification |
| 地位分级 |
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88. | seedling sorting |
| 苗木分级 |
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89. | stage compression |
| 分级压缩 |
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90. | classificatory function |
| 分级功能 |
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