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| 61. | efficiency coefficient |
| 效率系数 |
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| 62. | beam efficiency |
| 波束效率 |
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| 63. | plate efficiency |
| 板效率 |
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| 64. | efficiency joint |
| 接合效率 |
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| 65. | stage efficiency |
| 级效率 |
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| 66. | efficiency characteristic |
| 效率特性 |
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| 67. | electron beam efficiency |
| 电子束效率 |
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| 68. | efficiency for charge-discharge |
| 充放电效率 |
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| 69. | effectivity of the rinse |
| 水洗效率 |
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| 70. | efficiency lf illumination |
| 照明效率 |
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