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| 81. | bon-arc spotlight |
| 碳弧聚光灯 |
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| 82. | multiple arc welding |
| 多弧焊 |
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| | |
| 83. | multi neuron arc |
| 多神经元弧 |
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| 84. | gas blast arc-quenching |
| 气吹灭弧 |
|
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| 85. | pseudo-periodic arc |
| 伪周期弧 |
|
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| 86. | intensive arc lamp |
| 强弧灯 |
|
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| 87. | portable arc welder |
| 轻便弧焊机 |
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| 88. | AC arc welding machine |
| 交流弧焊机 |
|
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| 89. | intensified sector |
| 加强光弧 |
|
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| | |
| 90. | graded scale curve |
| 分度弧规 |
|
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