And the paper gives a simple formula which can make the ground tracks of the orbit repeat and recover the whole globe.
并且提出了使得地面轨迹形成覆盖循环所需要满足的简要公式。
Also ring racing was popular on asphalt and ground tracks. It was enough to have a modified road car to take part in the racing.
另外在沥青路面和赛道上进行的环形竞速也广受欢迎，那些参赛的车辆都进行了足够的改良。
The ground tracks of satellites required for mission should be maintained close to those of reference orbits over the lifetime of satellites.
轨道维持的任务是将卫星的星下点轨迹保持在设计的参考轨迹附近。
We knelt (down) on the ground to examine the tracks.
我们跪在地上察看足迹。
The radar, which is operational under all weather conditions, immediately detects, monitors, and tracks all ground moving targets and all sea targets (moving and stationary) in the region of interest.
该雷达可在各种天气条件下作战，可以立即发现、监控和跟踪敏感区域内所有地面移动目标和所有海上目标(移动和固定)。
Tracks from heavy trucks and four-by-fours tore deep into the ground, a carelessness that could take hundreds of years for the desert's slow systems to repair.
重型卡车和四驱车留下的车辙深深的陷入了地表，对于更替速度缓慢沙漠生态系统来说，如此不负责任的破坏行为需要上百年时间才能被完全修复。
On the ground, I notice rabbit tracks where moments ago I had seen only unbroken snow.
地面上，我注意到，在我刚才看到的一片平整的雪地上有兔子的爪印。
Partly funded by WCS, wildlife biologist Kashmira Kakati had been studying the gibbons of Jeypore-Dehing and became curious about the predator tracks she kept finding on the ground.
在WCS的部分资金支持下，野生动物学家卡什·米拉·卡卡蒂(Kashmira Kakati)一直在对Jeypore - Dehing雨林的长臂猿进行研究。由于自己持续观察的这一地区出现了捕猎者的踪迹，卡卡蒂开始感到忧虑。
By tracing the paths based on those tracks on the ground, the streets on the borders were connected by using comfortable slopes, making the paths accessible for all the neighbours.
循着按地面踪迹而建的道路，路边的街道通过舒缓的斜坡来连接，使所有邻居都能使用道路。
Thee ground under the tracks appears to have become waterlogged and the concrete ties and steel track submerged.
铁轨下面的泥土看起来已被浸泡，混凝土轨枕和钢轨已被淹没，照片显示重型机械拖走了枕轨，并压平了铁路床。
When a train comes in on the tracks below, the ground of the railroad station vibrates.
当有火车从地下的轨道经过时，整个火车站的地面都在震动。
Beck and derives the ground bearing distribution of vehicles on rubber tracks.
贝克的土壤力学理论为依据，推导橡胶履带车辆接地比压的分布。
Instead of tracks laid on the ground, many of China's high-speed trains run on elevated rails to spare farmlands and keep the towns along the routes intact.
高速铁路采用“以桥代路”，有效节约了耕地，减少了对沿线城镇的切割。
The measured results show that the vibration levels of the environmental ground and building floors increase with the train speed, while attenuating with the distance to the railway tracks;
对于多层建筑物，较高楼层的振动大，轴重大的列车引起的振动较大；
The measured results show that the vibration levels of the environmental ground and building floors increase with the train speed, while attenuating with the distance to the railway tracks;
对于多层建筑物，较高楼层的振动大，轴重大的列车引起的振动较大；
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