flight-test stage的意思|示意

NASA needs good weather to launch Ares I-X because engineers need to see the rocket flight all the way through first stage separation, which will mark the end of the test.

NASA需要好天气来发射战神I-X，因为工程师们要在第一级火箭分离前观测火箭飞行全过程，第一级火箭分离标志着试飞的结束。

Military aviation experts said the fighter? Known as the J-20? Appeared to be conducting high-speed taxi tests, which are usually the final stage before a test flight.

空军专家说这架战机，也就是J20似乎在做高速滑行实验，这通常是试飞前的最后一个步骤。

The theoretical analysis and test is carried out for the premature releasing for the two-stage safety of electromechanical fuze in a real flight of antiship missile.

针对某系列反舰导弹打靶实例中机电引信出现二级保险提前解除的问题进行了理论分析和试验。