"The first braking at perilune is another key moment in the long journey of Chang'e-1," he said.

"第一次动perilune一个关键刻，在漫长的征上的嫦娥一号， "他说。

Abstract.The first orbit maneuver of lunar orbit insertion (LOI) must be implemented at the first perilune of the spacecraft flight to the moon.

月球捕第一次动必须在卫星飞向月球的第一近月点完成。