短语词组短语firing g order 放炮次序FO Firing Order 点火顺序firing order test 点火顺序检查rocket -firing order 火箭发射程序engine firing order 发动机发火次序firing order of cylinder [机]汽缸发火次序firing order sequence 点火顺序alternated firing order 交错发火顺序 返回 firing order