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81. | national boundary marker |
| 国界标志 |
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82. | climatic indicator |
| 气候标志 |
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83. | activation flag |
| 活动标志 |
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84. | notch generator |
| 标志发生器 |
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85. | labelling of chemicals |
| 化学品标志 |
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86. | product marking |
| 产品标志 |
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87. | lead identification |
| 引线标志 |
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88. | prospecting guide |
| 勘探标志 |
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89. | marking of lifesaving appliance |
| 救生设备标志 |
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90. | adjustment mark |
| 照准标志 |
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