The launching circuit of certain type of aircraft is a component of weapon control system and it needs testing regularly.
某型飞机发射回路是武器控制系统的一部分，必须定期对其进行检测。
The launching circuit of certain type of aircraft is a component of weapon control system and it needs testing regularly.
某型飞机发射回路是武器控制系统的一部分，必须定期对其进行检测。
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