目的：探讨脑痛立停胶囊治疗偏头痛的作用机理。
Objective:To discover the action mechanism of Naotong Liting capsule as a medicine used to cure migraine.
由机头朝向操控者的倒飞停悬，将升降舵打降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 forward 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.
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