地球质量 meaning in English
mass of earth
Examples
- Dr marcy suspects that his new discovery , which has about 45 times the mass of the earth , is composed of a rocky core surrounded by a thick envelope of hydrogen and helium gas
马西博士怀疑，他的这个拥有地球质量四十五倍的新发现星体有一个岩层核心构成，并被一层很厚实的氢气与氦气层笼罩。 - The european southern observatory telescope in chile has an outside chance of finding them next year : a new instrument there could detect planets as low as about 15 times earth ' s mass by looking for the gravitational tugs each has on its star
明年，位于南美智利的欧洲南方天文台的望远镜有个渺小的机会，或可发现它们：那儿的新仪器将可观察行星对恒星的重力拉扯效应，进而侦测出只比地球质量重15倍的行星。 - Overlap between the second hand and minute hand , or the 11th overlap between the minute hand and hour hand , which is 12 hours later . actually it is easy to see this must be one of the answers . but it is a bit surprising that they simply do not overlap at other times
天文学家斯特格及奥尔特在1950年提出在太阳以外五万个天文单位的地方，有一个包围著太阳系，以太阳为中心旋转的云团，我们所见的长周期彗星，就是从这个彗星云又称为奥尔特云而来，估计那里有1 , 000亿颗彗星，其总质量比地球质量小，绕太阳公转一周需时数百万年。