All commercial nuclear power is provided by fission at the present time.目前所有的商用核动力都是通过核裂变产生的.Caesium - 137 is a radioactive isotope, formed mainly through nuclear fission.铯-137是一种放射性同位素, 主要由核分裂产生.The fission of the cell ...
Positive aileron deflection produces an anti - clockwise moment about the X axis.正的副翼偏转角产生绕X轴的负方向力矩.Once the container is full, it stays shut until you turn it clockwise.容器一旦装满它会保持关闭，想要打开须按顺时针方向转动。They are circling the L...