单词	isochrone line
释义	isochrone line 等龄线
随便看	approach route locking approach schedule approach section approach section length approach section of a highway level crossing approach section track circuit approach segment approach sequence approach sequence aircraft approach shot approach shots approach sign approach signal approach slow aspect approach-slow signal approach slow signal approach span approach spans approach speed approach speed on testing approach steam velocity approach stream velocity approach surface approach surface base line approach surveillance radar ylwy ylxc ylxd ylxh ylxl ylxm ylxs ylxx ylxy yly 細み細むすび細め細める細やか細やか細る細アミ細イ細イ