Based on polygon convex hull method, the chord line is extracted.

采用了基于多边形凸包的方法提取弦线。

Guitar tablature arrangements of every song from the album, complete with melody line, lyrics and chord symbols.

吉他琴谱安排每首歌来自专辑，完整的旋律线，歌词与和弦的符号。

He used the higher notes of a chord as a melody line and made other changes.

他运用更高音调的和弦音作为旋律线并做了其它的修改。

The paper introduces the concept of curve following turnout branch line, the confirmation of head and end, the chord offset calculation of points, the measuring steps in the field.

文章介绍了道岔附带曲线的概念及头尾的确定，各各点支距的计算和现场测设步骤，并确定了拨道整正方法。

"He began working on the song" Cherokee. "he used the higher notes of a chord as a melody line and made other changes." He now could play the things he had been hearing.

他开始创作“切罗基”，他使用弦乐中较高音符作为乐曲主弦律并做了些别的变化，现在他可以演奏听到过的曲子。