It has been shown, that NIM has reached the international advanced level in the fieldofgravity measurement.
比对结果表明，中国计量科学院在绝对重力测量研究方面达到了国际先进水平。
2
A key concept of General Relativity is that gravity is no longer described by a gravitational "field" but rather it is supposed to be a distortion of space and time itself.
广义相对论的一个关键概念就是，不再用引力“场”来描述引力，而是用空间和时间本身的畸变来表述。
3
The mission consists of twinspacecraft that will enter tandem orbits around the Moon for severalmonths to measure the gravityfield in unprecedented detail.