The Common Extensible CryogenicEngine, CECE for short, has completed its third round of intensive testing.
公共可扩展低温学发动机，简称CECE，已经完成了第三轮加强测试。
2
This equates to an unprecedented 17.6:1 deep-throttling capability, which means this cryogenicengine can quickly throttle up and down.
这相当于达到了空前的17.6:1深度节流能力，意味这台低温发动机能快速控制节流。
3
The Common Extensible CryogenicEngine being developed for NASA burns a mixture of liquid oxygen (-297 degrees Fahrenheit) and liquid hydrogen (-423 degrees).