为什么会脱落呢？ 在航天飞机被发射出去之前，它的外部燃料箱里会装满50万加仑（合190万公升）的极冷液态氢和液态氧。
The insulating foam prevents ice from forming on the tank when it is filled with 500,000 gallons (1.9 million liters) of supercold liquid hydrogen and liquid oxygen before liftoff.
我几乎每天驱车到那所房子，想过在车子的行李箱里装上一把铁楸，停在她家园子的路边，援救出几株被厚厚的杂草遮盖的百合。
I drive by that house almost daily and have been tempted to load a shovel in my car trunk, stop at her curb and rescue a few lilies from the smothering thicket of weeds.
测试装置由测试计算机、测控箱和舵机工作电源组成，能够完成导弹舵机静动态综合性能测试，同时具有跑合试验功能。
In order to test comprehensive performance of missile actuator with consideration of outside and field testing, a portable testing device with high precision is developed.
应用推荐