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.
该公司表示，最初的手写配方被放在一个770磅（约合350公斤）重的保险箱里，外面还封了两英尺厚水泥，另有摄像头和动作探测器监控。
The company says the original handwritten recipe is housed in a 770-pound safe encased in two feet of concrete and guarded by video cameras and motion detectors.
每个RFID垃圾箱价值170万韩元（约合1500美元），可供60户家庭使用。
Each RFID bin costs 1.7 million won ($1,500) and can cater to 60 households.
介绍了应用人机对话技术、PLC和全数字直流调速器，对依靠调整减速箱挡位来设定钢丝绳生产捻距和筐篮转速的老式机械传动的合绳机进行改造。
Applying interactive interface, PLC and full digital DC speed adjusting system to update old mechanical closer that use gearbox Settings to change the layer of wire rope and the speed of cage.
航空牌“人造皮革箱用料上乘，做工精细，款式新颖，价格合 理，规格齐全，欢迎选购。
Aviation‖ Artificial Leather Suitcase Selected materials, fine workmanship, modern designs, reasonable price, various specifications. Order welcome.
航空牌“人造皮革箱用料上乘，做工精细，款式新颖，价格合 理，规格齐全，欢迎选购。
Aviation‖ Artificial Leather Suitcase Selected materials, fine workmanship, modern designs, reasonable price, various specifications. Order welcome.
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