The diagonal branch of ventilation network has the characteristic of instable airflow.
通风网络中的角联分支本身具有风流不稳定的特点。
Left descending arteries were ligated at the distal side of the second diagonal branch.
分离左冠状动脉左前降支,第二对角支远端结扎。
It just can be seen the change of airflow direction in diagonal branch from ventilation network diagram.
从通风网路图仅能看出角联分支风流方向的改变。
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