室内、隧道、电缆沟内或直脉地下，能够承受一定的机械外力和一定的拉力。
For laying indoor, in tunnel, cable French, well or direct in ground, able to bear external mechanical forces and certain pulling force.
运动伪影一直是冠脉成像的一个最大挑战。
Motion artifact constitutes the most important challenge to coronary artery imaging.
无保护左主干病变一直是冠脉搭桥治疗的传统领地。
Unprotected left main disease is the traditional territory of coronary artery bypass grafting.
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