这是一个无人驾驶的双翼飞机，它有着自动钢琴的风箱来为回旋装置提供动力，以及一个收银机的机械装置——通过记录类似螺旋推进器的转子的旋转次数来计算飞行的距离。
It was an unmanned biplane with player-piano bellows to power its gyroscope and a cash-register mechanism that calculated distance flown by counting the rotations of a propeller-like rotor.
在电子回旋脉塞动力学理论中，以电子回旋中心坐标系中场的局部展开为基础的方法有很大的优点。
In the kinetics of electron cyclotron masers, the method based on the local field expansion in the guiding center frame has many advantages.
本文给出了回旋脉塞泵自由电子激光的动力学理论，求得了线性增益，并提出了两种回旋脉塞泵方案。
Vlasov kinetic theory of the FEL with cyclotron maser pump is presented, linear growth rate obtained and two schemes of cyclotron maser pumps are proposed.
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