公司的科研小组，正在采用先进泵式喂料系统，为大型飞行器，研制动力更加强大的引擎，现在正在为商业客户的需求，进行飞行测试实验。
The XCOR team then developed a more powerful engine with an advanced pump-fed fuel system for a larger aircraft now being flight-tested for a commercial customer.
检查和测试机械单位，如发动机，变速器，车桥及制动系统，以确定故障和失灵位置。
Inspect and test mechanical units, such as engines, transmissions, axles and brake systems, to locate faults and malfunctions.
检查和测试机械单位，如发动机，变速器，车桥及制动系统，以确定故障和失灵位置。
Inspect and test mechanical units, such as engines, transmissions, axles and brake systems, to locate faults and malfunctions.
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