短语词组短语pulse -firing control 脉动燃烧控制pulse chain firing 脉冲链触发pulse infusion shot firing 注水爆破magnetic field pulse firing circuit 磁性点火电路firing pulse 启动脉冲;[电]点火脉冲;触发脉冲;爆炸脉冲firing pulse frequency 点火脉冲频率firing g pulse 启动脉冲 返回 pulse firing