business cycle是什么意思

网络释义

用法例句

The nutrient cycling and the efficiency of nutrient utilization of the Cajanus cajan 2-year old plantation in Dry-hot Region;

元谋干热区两年生木豆(Cajanus cajan)人工林营养循环和养分利用效率

The nutrient recycling is considered in the models for competition of n popuiations in a chemostat, and the sufficient conditions for the existence of nonnegative equilibria and boundedness of the solutions are given.

在n种群的恒化器竞争模型中考虑营养循环的作用 ,得到非负平衡点的存在性和解的有界性的充分条件。

A chemostat model with twonutrients and nutrients recycling is considered.

构建了营养再循环情形下的两微生物种群竞争利用双营养的恒化器模型,得到了微生物种群绝灭和一致持续生存的充分条件。

The Breaking and Reconstruction of Nutrient Recycling Chains in Agro-ecosystem in China;

我国农业生态系统营养循环链的断裂与重建

On the Dynamical Behaviors in Chemostat Model with Nutrient Recycling and Impulsive Input

具有营养循环和脉冲输入的微生物培养模型的动力学性质研究

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。

Effects of Aquatic Macrophytes on Nutrient Cycling in Shallow Freshwater Lake Ecosystems;

大型水生植物在浅水湖泊生态系统营养循环中的作用

Biological Cycling of Nutrient Elements in Young Eucalyptus urophylla×E.grandis Plantation

尾巨桉人工幼林营养元素的生物循环

Research on Nutrient Flow and Cycle Model in China Nutrition System;

中国营养体系养分流动循环（CNFC）模型研究

Phosphorus Cycling and Balance in "Agriculture-Animal husbandry-Nutrition-Environment" System of China;

中国“农田—畜牧—营养—环境”体系磷素循环与平衡

Experimental Study of the Effects on Neuron by Neurotrophic Factors after Hypothermia Cardiopulmonary Bypass;

深低温体外循环神经营养因子脑保护实验研究

Disinfection of Recirculating Nutrient Solution of Soilless Cultures by Ultra-violet Radiation;

无土栽培循环营养液紫外线灭菌技术的研究

An Exploration on 4-Phase-Cycle Training Model of Marketing Plan Specialty in Higher Vocational College;

高职营销策划专业“四阶循环”培养模式研究

Nitrogen Cycling and Balance in "Agriculture-Livestock-Nutrition-Environment" System of China;

我国“农田—畜牧—营养—环境”体系氮素养分循环与平衡

At present, all nutrient elements are gradually enriched in the nutrient cycle of Fargesia denudata ecosystem.

(3)目前,缺苞箭竹生态系统养分循环中,各种营养元素都在逐渐富集。

The circulatory system is the primary means of feeding the crystalline cells and detoxifying the form.

循环系统是为水晶细胞提供营养、解毒身体的主要方式。

"Circulation: Process by which nutrients, respiratory gases, and metabolic products are transported throughout the Body."

循环:营养物质、呼吸气体和代谢产物在整个生物体内的转运过程。

Research on Limiting Effect of Nutrients to Phytoplankton Growth and Simultaneous Carbon Cycling;

大洋浮游植物生长过程中的营养盐限制作用及碳循环研究

Role of Extracellular Phosphatase Produced by Phytoplankton in the Processes of Phosphorus Cycling in Eutrophic Lakes;

浮游植物胞外磷酸酶在富营养化湖泊磷循环过程中的作用

The Planting Experimentation of Curcuma Wenyujin in Lime Soil and the Biogeochemical Cycling of Its Nutrition Elements;

温郁金在石灰土上栽培试验及其营养元素生物地球化学循环

Development of a Dynamic Model for Dissolved Inorganic Nitrogen and Phosphate Cycles and Budgets in Jiaozhou Bay and Applications;

胶州湾氮、磷营养盐循环收支动力学模型及其应用