星云中的气体在它的重力下凝聚形成新星，新星变得足够满以避免核聚变。
The stars form when gas in the cloud condenses under its own gravity and becomes packed enough to ignite nuclear fusion.
行星凝聚过程中，重力和微粒碰撞造就了高温环境，这对融化漂浮在太空中的金属粒子是必需的，各种矿物也开始形成。
As the planets congealed, gravitational forces and particle collisions created the high temperatures necessary to melt metals floating around in space, and minerals began their diversification.
对重力沉降、絮凝与凝聚、过滤理论、洗涤与脱水及介质的性能进行了详细分析。
The gravitational settling, flocculating and condensation, the theory of filtering, flushing and dewatering , the property of medium have been studied in detail also.
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