Review of studies on the classification,application and material cycle of plants in genus Carex;
苔草植物分类、利用及物质循环研究进展
In this paper, after accumulating the older generations experience and sorting out a wealth of material, the author analized the basic principles of material cycle in ecological system of forest, and investigated the nutrient utilizing in forestry management.
本文在积累前人经验和整理大量资料的基础上,分析了森林生态系统物质循环的基本原理,探讨林业经营管理活动中养分利用的问题,同时提出有关的建议。
Research on the energy conversion and material cycle in agro-ecosystem was carried out in zhangbei experimental area in the years of 1986￣1988.
从１９８６年～１９８８年，在张北试区进行了农业生态系统能量转化和物质循环研究。
The material cycling in pedosphere is an important portion on the research of the material cycling in global changes.
土壤圈的物质循环是全球变化中物质循环的重要内容，因此，研究土壤圈及其物质循环的结构与功能，对全球变化，特别对全球土壤变化有密切关系。
Inquiry on matter circulation and energy circulation in a food chain in Heidong Cave of Guizhou Province;
贵州黑洞内一个食物链层次上的物质循环和能量流通探讨
The traditional core theory of ecology is “matter circulation” and “ecology b alance”,which cultivates the concept that the limited physical resources can be exploited limitlessly through matter circulation,setting the foundation for the theory of constant stability of ecology.
传统生态学的核心理论是“物质循环”和“生态平衡”。
the essay analyzes characteristics of matter circulation of agricultural eco-economysystem in high cold and semi-arid area of Bashang by taking yejia village for an instance.
以叶家村为例,分析了坝上高寒半干旱区农业生态经济系统物质循环特征,提出了该区农业经济可持续发展的一系列对策。
Study on nutrient cycle of rubber-tea-chicken agro forestry system in tropical area of China;
我国热带地区胶—茶—鸡农林复合系统物质循环研究
The relationship between dissolved oxygen and nutrient cycle in low-wetland fishponds of the Huanghe-Huaihe-Haihe plain was studied.
对黄淮海平原低洼盐碱地鱼塘中溶解氧与物质循环之间的关系进行了初步研究。
On Material and Non-material Cycle based on the Recycle Economy;
循环经济的物质与非物质循环实现途径研究
Models of Generalized Material Recycling and Its Policy Implication for Circular Economy in China;
广义物质循环模型及对循环经济的政策内涵
ON MATERIAL AND NON-MATERIAL CYCLIC MECHANISM OF THE RESOURCES CITIES ON THE BASIS OF RECYCLE ECONOMY;
基于循环经济的资源型城市物质与非物质循环机理研究
Material Recycling within and among Enterprises;
企业内部及企业之间物质循环的研究
Geochemical Characteristics of Cycling of Substances in Karstic Ground Water System;
喀斯特地下水文系统物质循环的地球化学特征
Analysis and Experiment of Gasification Process of Biomass Circulating Fluidized Bed;
生物质循环流化床气化过程分析及试验
geological cycle of pollutants
污染物的地质大循环
proton-proton chain
【核】质子-质子循环
Chemical constantly circulate or recycle in the system.
化学物质在系统中不断循环或回流。
Strategies of biomass energy exploitation in agricultural circular economy;
农业循环经济与生物质能源开发策略
Carnot Cycle of Imperfect Gas as Working Material;
非理想气体作为工作物质的卡诺循环
Recirculated system of biomass pyrolysis liquefaction plant
生物质热解液化装置尾气的循环利用
Design of a recirculating aquaculture system based on mass balance
基于物质平衡的循环水养殖系统设计
Preparation and evaluation of long-circulating liposomes of Venenum Bufonis extractive
蟾酥提取物长循环脂质体的制备及质量评价
a watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant.
含糖、盐、矿物质的水溶液，通过植物脉管循环。
Limits of Sustainable Material Flow in Environmental-Economic Systems and Characteristics of Material Flow within Circular Economy Systems;
环境经济系统物质流可持续性与循环经济物质流特征分析
a substance that produces anesthesia when injected into the circulatory system.
当被注入到循环系统时，生产麻醉的一种物质。
The Effect of the Vasomotion on the Mass Transfer in Microcirculation
微血管自律运动对微循环物质交换的影响