子午线

This car is fitted with radial tyres.

这辆车配有午线。

Radials can help give a car better control.

午线有助于更好控制汽车。

All places on the same meridian have the same longitude.

在同一午线上的方都有同的经度。

Terrestrial longitude is measured in degrees east or west of the Greenwich meridian.

球的经度是用格林尼治午线向东或向西的度数来表示的。

The course which will cut each meridian at the same angle is termed a rhumb line.

与每一午线同一角度的航向叫恒向线。