形容詞 gravitational:

1. of or relating to or caused by gravitation
   同義詞：gravitative

1. A hypothetical particle postulated to be the quantum of gravitational interaction and presumed to have an indefinitely long lifetime, zero electric charge, and zero rest mass.
   引力微子一種假想粒子，被假定為引力相互作用的量子，并被推測(cè)為具有無(wú)限長(zhǎng)壽命、零電荷和零靜止質(zhì)量
2. A mare on the moon having rock of greater density than that of the surrounding area, thus exerting a slightly higher gravitational force.
   質(zhì)量密集月球上的陰暗部，其內(nèi)部巖石比周圍地區(qū)的巖石的密度大，因此產(chǎn)生略大些的引力