早期，阎焱先生还曾担任江淮航空仪表厂工程师；
Mr. Yan previously was the Chief Engineer at the Jianghuai Airplane Corp.
本文介绍我们研制的一种新型航空仪表——航空发动机电子转速表。
A new type aircraft meter-electronic Percent Turnmeter for aircraft engines is introduced in this paper.
航空器材。圆盘式机载仪表。机械传动式转速表。
Aircraft equipment. On board instrument with round dials, mechanical transmission tachometer.
飞机仪表，电气和航空电子设备技工，技师和检查员。
Aircraft instrument, electrical and avionics mechanics, technicians and inspectors.
航空器材。圆盘机载仪表。一般尺寸。
Aircraft equipment. On board instrument with round dials. General dimensions.
飞机仪表，电气和航空电子力学，技术员和检查员。
Aircraft instrument, electrical and avionics mechanics, technicians and inspectors.
所有的仪器仪表和航空电子设备。
进行仪表飞行的民用航空器，应当遵守仪表飞行规则。
A civil aircraft performing instrument flight shall observe instrument flight rules.
进行仪表飞行的民用航空器，应当遵守仪表飞行规则。
A civil aircraft performing instrument flight shall observe instrument flight rules.
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