solid rocket短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 n.用固体燃料推进的火箭 The flight support motor, or FSM-17, burned for approximately123 seconds-- the same time each reusable solid rocket motor burns during an actual space shuttle launch. 标号为fsm-17的驱动引擎工作了大约123秒，这和实际发射中式相同的。 yeeyan