连结线 meaning in English

inter switchboard line
tie line
tie link
tie trunk
tie-line

The compositions of the two phases in equilibrium are given by the points at the ends of the tie line .
成平衡的两相之组成由连结线的两端点给出。
During piano playing and teaching , we should pay attention to rhythm changing of formal or informal rhythm , strong or weak beat , syncope or link line tercet or various slur
在钢琴教学及演奏中，要注意正规节奏与不正规节奏、强起拍与弱起拍、切分音与连结线、三连音及各种连音符等节奏的变化。