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41. | reliability of electrical apparatus |
| 电器可靠性 |
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42. | electric switch |
| 电器开关 |
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43. | composite apparatus |
| 组合电器 |
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44. | constructional element of electrical apparatus |
| 电器构件 |
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45. | refrigeration appliance |
| 制冷电器 |
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46. | Electric Appliance Shop |
| 电器商店 |
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47. | insulating oil |
| 电器绝缘油 |
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48. | operating characteristic of electrical apparatus |
| 电器特性 |
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49. | airborne electric apparatus |
| 航空电器 |
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50. | ancillary apparatus |
| 辅助电器 |
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