您要查找的是不是：
- active gravitational mass 主动引力质量
- It is a remarkable fact that the inertial mass of all bodies is, within experimental accuracy, proportional to the gravitational mass. 值得注意的是，在实验的准确度内，所有的物体的惯性质量与引力质量都成正比。
- Relations between Inertial Mass and Gravitational Mass 惯性质量与引力质量的关系探讨
- The Gravitational Mass Deficit of Charged Celestia Body 荷电天体的引力质量亏损
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智？
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- He was very active and rode down several horses. 他劲头很大，一连骑了好几匹马。
- She plays an active part in local politics. 她积极参与地方政治活动。
- The regulatory net will be cast over the “shadow” banking network of hedge funds, money-market funds and the like, to which much financial activity gravitated during the boom. 监管网络会覆盖到涉及对冲基金的灰色银行体系，货币市场基金等等诸如此类在繁荣时期吸引了大量金融行为的方面。
- The steel market will continue to be active. 钢材市场将会继续保持活跃。
- An active volcano may erupt at any time. 活火山随时可能喷发。
- He was disabled when on active service. 他在战斗中受伤致残。
- Ms. Brown is active in the party. 布朗女士在晚会上很活跃。
- The active boy was extremely distractible. 那好动的男孩极不专心。
- His lame foot disqualified him for active work. 跛脚使他无法参加积极活动。
- gravitational mass 引力质量
- He's very active for an elderly man. 作为老年人，他是非常活跃的。
