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1·The Mielec M-15 is a jet agricultural aircraft, developed and manufactured in Poland in the 1970s by an order of the USSR.

梅莱茨m - 15是农用喷气机，20世纪70年代，在苏联命令下由波兰设计和生产。

2·Furthermore, in this paper is described a five-channel detection system with fiber optics for the liquid level, which is used in agricultural aircraft successfully.

还具体介绍了已成功地应用于我国农业飞机的五通道光纤液位检测系统。

3·Foreign demand for advanced machinery is huge; exports of civilian aircraft, drilling tools, telecommunications equipment, agricultural machinery and excavators all rose at double digit rates in 2007.

对于高级机械的海外需求巨大，2007年民航业出口、钻类工具、电信设备、农业器具和开凿机等皆以两位数字增长。

4·Only small aircraft, and those needing tough low-speed propulsion at low altitudes, for agricultural work and fire-fighting, still have piston engines.

只有一些小型的飞机，以及那些用于在低空低速爬升飞行的用于农业以及灭火用途的飞机仍然使用活塞发动机。