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| categoria (A keyword or description used to identify groups of related items) | |||
| modalitat; categoria | |||
| 英语 词库 | |||
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| II An ILS facility providing operation down to a 100-foot decision height and an RVR of not less than 1,200 feet. (Interex) | |||
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| I An ILS facility providing operation down to a 200 foot decision height and an RVR of not less than 2,400 feet. (Interex) | |||
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category : 2 短语, 2 学科 |
| 数学 | 1 |
| 环境 | 1 |