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| 61. | periodic coverage |
| 周期性遥测区域 |
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| 62. | gravel coverage |
| 砾石覆盖率 |
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| 63. | optimum coverage |
| 最佳覆盖 |
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| 64. | extended coverage |
| 增加保险范围 |
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| 65. | dividend coverage |
| 股利保证金 |
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| 66. | mortar coverage |
| 砂浆保护层 |
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| 67. | dropped coverage |
| 未激发段 |
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| 68. | photographic coverage |
| 摄影资料区 |
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| 69. | elevation coverage |
| 仰角范围 |
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| 70. | jamming coverage |
| 干扰影响区|干扰范围 |
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