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| 71. | sprinkler coverage |
| 喷头保护范围 |
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| 72. | coverage diagram |
| 反射特性曲线|可达范围图|覆盖图 |
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| 73. | coverage frequency |
| 覆盖频率 |
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| 74. | subsurface coverage |
| 地下覆盖段 |
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| 75. | coverage sector |
| 覆盖扇区 |
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| 76. | transmission coverage |
| 播送覆盖范围；发送覆盖范围 |
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| 77. | coverage target |
| 普及对象；免疫对象 |
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| 78. | television coverage |
| 电视覆盖区|电视服务区 |
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| 79. | quantitative coverage |
| 量的普及率 |
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| 80. | azimuth coverage |
| 方位视界 |
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