对于任何一种导弹的伺服系统来说,使它的重量为最轻和体积为最小,几乎是最主要的要求了.Minimum weight and volume are almost overriding requirements for any missile servo.战斗部是导弹的有效载荷, 即运载物.The warhead is the missile's payload, or cargo.在较远的距离处较低的导弹速度也许将不会限制导弹的作...
Basal metabolism is much lower for creatures in cold water.冷水中生物的基础代谢速度要低很多。They have been visited by creatures from outer space.有外星人拜访了他们。Camels are among the most physiologically resilient creatures on Earth.骆驼是地球上生理适应...