Even with the protective gear, the scientists often operated at the edge of safety.
即使有保护装置，科学家们仍然常常是在危险的边缘进行工作。
The tricycle gear configuration also allows excellent forward visibility while on the ground - crucial when operated in off-airport fields.
三轮车齿轮的配置也可以让优秀的前进能见度，而在地面上-关键操作时，在场外机场领域。
Transaxles give their best fuel economy when operated in the top cruise gear and with steady pressure on the gas pedal.
当运行在定速巡航状态和恒定的压力作用在油门踏板上时，此时驱动桥能有最佳燃油经济性。
A kind of selective procedure of change gear which is operated more conveniently is presented. It has a better generality. It can quickly selects all compositions whose accuracy are given.
介绍了一种操作更方便的、通用性更好的挂轮选择程序，它可以迅速地选择给定精度下的所有组合。
A high-power hand-operated three-phase AC generator includes a handle, a handle fixed plate, a driven gear, a press mounting gear, and a generator box body.
一种大功率手摇三相交流发电机，其包括一手把、一手把固定板、一从动齿轮、一压装齿轮、一发电机箱体。
When operated by a machine, the two bevel gears disengage from the engaging state, and the worm gear and the worm are engaged for driving;
机动时，两个锥齿轮脱离啮合状态，蜗轮、蜗杆啮合传动；
When operated by a machine, the two bevel gears disengage from the engaging state, and the worm gear and the worm are engaged for driving;
机动时，两个锥齿轮脱离啮合状态，蜗轮、蜗杆啮合传动；
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