prime meridian (line of longitude which passes through Greenwich near London,numbered zero,from which the other lines of longitude are calculated)
本初子午线（通过伦敦附近之格林尼治的经线,度数为零,是计算东西经度的起点）.
the first [prime] meridian
基准[本初]子午线((经度0度的线;通过英国的格林威治(Greenwich)))
geodetic meridian
大地子午线地理子午线
Of or relating to meridians or a meridian.
子午线的子午线的或与子午线有关的
Of or relating to a meridian;meridional.
经线的，子午线的子午线的或与子午线有关的；经线的
observer's meridian
测者子午圈观测者子午线
the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere.
用作全世界标准时间的本初基准的格林威治子午圈的平太阳时。
radial tyre of truck
载货汽车子午线轮胎
principal meridian of gnomonic chart
心射投影基准子午线
Gauss grid convergence
高斯平面子午线收敛角
central meridian of gnomonic chart
心射海图中央子午线
all-steel radial truck tyre
全钢子午线载重车轮胎
Steel cord for radial tyre
GB/T11181-1989子午线轮胎用钢丝帘线
Either half of such a great circle from pole to pole.
子午线从极点到极点的大线圈的一半
Study on the Preferred Formula of Bead Rim Cushion in Radial Tires
子午线轮胎子口护胶配方的优化研究
the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body.
从观测者所在的子午线到给定天体的子午线沿着天赤道的角距离。
a meridian that passes through the observer's zenith.
穿过观测者顶点的子午线。
The time or point in the sun's path at which the sun is on the local meridian.
太阳在子午线上方之时或之点