protection span

• 保护翼

protection span的用法和样例：

例句

1. 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。
2. Assyrian art also associates the winged disc with divinity and divine protection of the king and people.
   亚述人的艺术也与有翼的圆盘连结，象征着神和神保护国王和人民。