closed orbit meaning in Chinese

闭轨道
闭合轨道

Multiple closed orbits of fixed energy for 3 - body problems with gravitational potentials
具有引力势的给定能量的三体问题的多个闭轨
Perhaps , the most famous one is the comet halley , it has a closed orbit with a period of 76 years
最出名的封闭式轨道彗星当然是以76年的周期绕日运行的哈雷彗星。
In the cases of and , there has no closed orbit to the system ( * ) in the first quadrant
这里，为某一负值，。对和不定号的情形，系统（ * ）在第一象限内均不存在极限环。
A comet with an open orbit will only visit the sun once . however , a comet with a closed orbit actually it is elliptical will visit the sun again and again
以开放式轨道绕日运行的彗星只会经过太阳一次，但封闭式轨道彗星即椭圆形轨道则可造访太阳多次。