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- The process is termed a nutrient cycle if the elements concerned are trace elements, which are essential to life. 当植物腐败后与矿物质在腐植质中自然结合，而为未来的植物生长提供养料时，生化地质循环于焉开始。
- The degradation of coarse woody debris (CWD) is a key issue among the researches of nutrient cycle,while stump degradation is a new research area for stump plays an important role in forestry ecology. 在森林生态系统的养分循环研究中,粗木质残体(CWD)的分解是目前的一个热点课题,CWD研究所包括的范围很广,森林砍伐后伐根分解的研究就是其中一个较新的领域,虽涉及者不多,但伐根在森林生态系统中所具有的生态作用却不容忽视。
- Energy conversion and nutrient cycling in grassdyke-fish pond ecosystem. 草基-鱼塘生态系统的能量转化与养分循环研究。
- Nutrient Cycle of Artificial Forests of Armand Pine 华山松人工林的养分循环
- The relationship of soil nutrient cycling characteristics with productivity of terrace millet on hilly loess plateau. 黄土丘陵区梯田谷子养分循环特征与生产力关系的研究。
- In this paper, effects of exotic plant invasions on soil biota and soil nutrient cycling processes are reviewed, and the mechanisms that underlie these impacts are discussed. 本文综述了外来植物入侵对土壤微生物、土壤动物以及土壤碳、氮循环动态影响的研究, 并探讨了其影响机制。
- Epiphytic lichens, an important component of epiphytes, play vital roles in biodiversity sustainability, water and nutrient cycling in forest ecosystems. 附生地衣是森林附生植物的重要类群之一, 在维护森林生态系统的物种多样性以及水分和养分循环等方面发挥着重要作用。
- Recently, much attention has been paid to soil fauna because they play an important role in nutrient cycling as a potential bioindicator of soil fertility in the forest ecosystem. 土壤动物群落是土壤生态系统的重要组成部分之一，是森林生态系统物质循环和能量流动的参与者与推动者，对森林土壤生态系统的形成、发育以及肥力的提高具有重要作用。
- Development of successful nitrogen management schemes has been a continual process of adapting to an evolving understanding of cropping systems, and nutrient cycling. 成功的氮素管理制度是对种植制度和养分循环不断认识和适应的过程。
- The pedal of a cycle is attached to a crank. 自行车的踏板与曲柄相连。
- There is a great contrast between nutrient cycles in natural vegetation and the nutrients involved in growing an arable crop. 天然生长的植物与人工栽培的作物在营养循环方面有很大的差异。
- It considered terrestrial, freshwater and marine systems, and a range of ecosystem services, including food, timber, air quality regulation, nutrient cycling, detoxification, recreation and aesthetic services. 它评估了陆地、淡水和海洋系统,以及一系列生态系统服务功能,包括食物、木材、空气质量的调节、养分循环、脱毒、娱乐和审美服务功能。
- With the development of biological invasion research, people have found soil microorganisms and nutrient cycling are closely connected with aboveground plant community and feedback exists among them. 近年来兴起的外来入侵植物与入侵地土壤生态过程相互影响的研究为外来植物入侵机理的揭示提供了新思路。
- It's easier to cycle with the wind behind you. 顺风骑车省力。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- The seasons of the year make a cycle. 一年四季构成一个循环。
- The business cycle experienced a sudden down. 商业周期经历了突然的萧条。
- This is the cycle of economic booms and slumps. 这是经济繁荣和经济萧条的周期变化。
- Cycle across America? Sounds a bit dodgy to me. 骑自行车横越美国? 听起来有些冒险。
- The pedals of a cycle are attached to a crank. 自行车的踏板与曲柄相连。
