junctionn.连接；会合处；交叉点junction exchange中继局junctional rhythm交界性节律,交接处心律junction position来话台junction varactor结变容二极管junction geometry中继线几何学junction boundary结边界junctionmodelling交叉口模型junctional tubule结合小管junction sequence交接序列junctional tissue[医] 结合组织(由房室结和房室束组成)