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instrument flight rules
avia.	仪表飞行规则 (仪表飞行规则是国际民航组织 (ICAO )和国家监管部门制定的规则和条例，来指导在依靠目视飞行不安全时的飞行规则。IFR 监管飞机在受管制的航路和机场飞行,飞行间隔由地面的操作人员管制。飞机根据电子信号导航)
el.	盲目飞行规则
navig.	仪表飞行规则
instrument flight rule
mil., air.def.	仪表飞行规则
English thesaurus
instrument flight rules
avia., Canada	A set of rules governing the conduct of flight under instrument meteorological conditions (IMC)
Instrument Flight Rules
IT, abbr.	IFR (Aviation)

instrument flight rules: 5 phrases in 1 subject

Aviation

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