岁差的 meaning in English

precessional

For example , methane concentrations fluctuate mainly at the 22 , 000 - year tempo of an orbital cycle called precession
举例来说，甲烷浓度波动的周期为2万2000年，与称为岁差的轨道周期相同。
When this precessional wobble brings the northern continents nearest the sun during the summertime , the atmosphere gets a notable boost of methane from its primary natural source ? the decomposition of plant matter in wetlands
当岁差的晃动让北半球陆地在夏季与太阳距离最近时，大气中的甲烷会明显上升；而自然界中甲烷的主要来自于湿地植物的分解作用。