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| 81. | protected switch |
| 盒装开关 |
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| 82. | switching curve |
| 开关曲线 |
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| 83. | switching matrix |
| 开关矩阵 |
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| 84. | on-off servo mechanism |
| 开关伺服系统 |
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| 85. | switching period |
| 开关周期 |
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| 86. | multipole switch |
| 多极开关 |
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| 87. | Turn on the switch. |
| 打开开关。 |
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| 88. | knife of switch |
| 开关闸刀 |
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| 89. | mercury cut-off |
| 水银开关 |
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| 90. | non contact switch |
| 无触点开关 |
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