1·The lunar gravity is about one-sixth that on earth.
地心吸力把物体吸向地心。
2·The lunar gravity is about one-sixth that on earth.
月亮的引力大约为地球的六分之一。
3·The recovery of the lunar gravity field model depends on the tracking observation of lunar detectors, the highest lunar gravity model order is connected with denseness of the tracking data.
月球重力场的恢复依赖于对绕球探测器的跟踪观测，可恢复重力场模型的最高阶次与观测数据分布的密集程度之间满足一定的关系。
4·Especially, the effects of lunar gravity, observation accuracy, orbital error and observation data types on the orbital determination accuracy of the lunar orbiter have been carefully investigated.
重点考察了月球重力场误差、观测量精度、初始时刻的先验轨道误差以及观测资料类型等对环月飞行器定轨精度的影响。
5·Data collected in 1994 by the Clementine spacecraft show that many of these lunar basins have no anomalously low gravity and some even have anomalously high gravity.
1994年由克莱门蒂号航天器收集的数据显示，这些月球盆地没有异常的低重力现象，有些甚至有异常高的重力。
6·To lighten the load, NASA's newest lunar probes will take an indirect route to the moon, via a type of celestial way station where the sun's gravity and Earth's gravity balances out.
为了能减轻装载，美国宇航局最新的月球探测器将间接的飞向月球，通过天文学中的一个停站点，在那里太阳和地球的重力场将相互抵消平衡。
7·NASA's Gravity Recovery and Interior Laboratory, or GRAIL, mission spacecraft will orbit the moon before landing on the lunar surface.
美国航天局的重力恢复与内部实验室计划，又称“圣杯”号月球探测器将首先环绕月球轨道飞行，然后在月球表面着陆。
8·For example, the use of wheeled vehicles to transport goods and the separation of materials by gravity-gradient processes can be modified to be used in lunar conditions.
举例来说，轮式载重车辆和依赖重力实现材料剥离的技术，经过改进是可以在月球重力条件下使用的。
9·The two NASA probes have flown close to the lunar surface, producing a high resolution gravity map of the Moon.
美国宇航局的这两辆探测器飞临月球表面，绘制高分辨率月球重力分布图。
10·Metzger and colleagues have used similar measures to model how a rocket plume could scatter dust and boulders in the low-gravity environment of the moon, threatening nearby lunar outposts.
Metzger和他的同事运用类似的手段去为在月球低重力环境下月球基地附近的浮尘和巨石对火箭升空的影响建模。