semifocal chord

英 美
  • 半弦
  • chord n.弦;和弦;情绪
    1. He is replacing the broken chord of his violin.
      他正在更换小提琴上那根断了的弦。
    2. Most wings have a different chord at different positions along their span.
      大多数机翼在他们跨径的不同位置有着不同翼弦长度。