To correctly capture cyclic processes, add backward connections to the process model that connect to an upstream activity.
要正确捕获循环流程，请在流程模型中添加连接上游活动的逆向连接。
From this inverted Nose-In hover, add backward cyclic and flip the helicopter back to an upright Tail-In hover, hold for five (5) seconds.
由机头朝向操控者的倒飞停悬，将升降舵拉升舵使直升机翻滚为机尾朝向操控者的正立停悬姿态，保持静止停悬5秒钟。
From this inverted Nose-In hover, add backward cyclic and flip the helicopter back to an upright Tail-In hover, hold for five (5) seconds.
由机头朝向操控者的倒飞停悬，将升降舵拉升舵使直升机翻滚为机尾朝向操控者的正立停悬姿态，保持静止停悬5秒钟。
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