航空器材。圆盘机载仪表。一般尺寸。
Aircraft equipment. On board instrument with round dials. General dimensions.
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.
但是，在天空中使用航空器材开展防汛信息采集却是空白。
However, it is a blank to use aviation equipments to collect flood information.
但是，在天空中使用航空器材开展防汛信息采集却是空白。
However, it is a blank to use aviation equipments to collect flood information.
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