onboard

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最引擎是涡轮喷射式，目前已淘汰；然后是涡轮螺旋桨式引擎，现在仍可在飞机上看到。

The ships are fitted with C- and S-band monopulse tracking radar, Cinetheodolite laser ranging and tracking system, velocimetry system, and onboard computers to track and control the spacecraft.

测量船配备有C- S-波段单脉冲雷达，激光测距经纬仪系统，测速系统舰载计算机去控制宇宙飞船。