A space navigator wishes to determine his velocityofapproach as he nears the moon.
一个宇宙飞行员希望确定出他接近月球时的逼近速度。
2
If you go much faster, the center of lift moves back on the wing, pushing the nose down and increasing velocity, until you soon approach the speed of sound.
如果飞机飞的太快的话，升力的重心就会从机翼转移到前半部机身上，飞机就会下降，速度会接近音速。
3
It is a basic approach by controlling the hydrating velocityof the slag MTC in the high temperature.