complex series meaning in English

反项级数
复级数

Energy is transferred from the electron donor to the organism for synthesis and maintenance by a complex series of enzymatic reactions .
为了细胞合成和维持生命，能量从电子给予体通过一系列复杂的酶反应转移到生物体。
The silk road was a complex series of trade routes between europe and asia , established in the first millennium bc
丝绸之路始建于公元前10世纪，是一条曲折的连接欧亚的商贸通道。
The east of lake baycal , including the far eastern region , is a complex series of uplands , including the yablonovy , stanovy , dzhugdzhur , verkhoyansk , chersky and koryak mountain ranges
贝加尔湖以东地区，包括远东地区，均为山地，有雅布洛诺夫、斯塔诺夫、朱格朱尔、上扬斯克、切尔斯基和科里雅克等山脉。
And continually intelligence in the design and development of new housing and plate so far 209 , 000 : phosphate magnesium territories activities of the housing series ; water brush shek activities of the housing series wood activities of the housing series ; complex series choi board of the housing and tai span plant vehicles have reached national standards
并不断智力于新型房屋及板材设计与开发，迄今为止本厂的：磷镁土活动房系列；水刷石活动房系列木板活动房系列；复合彩板房系列及大跨度厂房车等均已达到国家标准。