On the other hand it introduces the mixed product of area element for curved surface and so on.
进而用向量代数的方法简化了古典微积分中关于面积元素及体积元素计算公式的推导。
Analysis on the concentration of some sediment elements in their transport process through monsoon evergreen broad-leaved forest ecosystem in Dinghushan, Guangdong Province, China;
鼎湖山季风常绿阔叶林某些沉积元素转移过程中的浓度分析
In this research, leaf traits including succulence (water content per unit leaf area), SLA (specific leaf area), mass-based and area-based leaf nitrogen concentration (Nmass and Narea) and elements accumulation (Ca, Mg, K, Na and Cl) in mature le.
本研究选取国内红树植物33种,比较两类红树植物成熟叶片结构性性状(肉质化程度、比叶面积SLA、单位重量叶氮含量Nmass及单位面积叶氮含量Narea)和叶片主要元素积累(Ca、Mg、K、Na和Cl)等叶片特征之间的差异,并依据这些差异对一些有争议的物种进行了重新界定,为科学地保护、管理和利用红树林提供依据。
Searching the differential of volume for body of rotation and the area for surface of revolution by using the frustum of cone
利用扁圆台求旋转体的体积元素与侧面积元素
The Accumulation and Transfer Processes of Nutrient Nitrogen at the Sediment-water Interface in the Yangtze Estuarine Tidal Flats;
长江口潮滩沉积物—水界面营养元素N的累积、迁移过程
ordinary integral element
寻常[通常]积分元(素)
Environmental Chemistry on Trace Elemental Mercury in Sediment-Water-Interface in Poyang Lake, China;
鄱阳湖沉积物—水界面痕量元素汞的环境化学研究
Construction of the Regional Elements of Differential Calculus and Re-integration into a Single-integral Directly
构建区域元素一元微分 重积分直接化为单积分
Based on the C-A method of the multifractal theory, two geochemical fields in Chifeng area, Inner Mongolia are studied.
从多重分形理论出发，在赤峰地区的2个区域应用“元素含量－面积(C-A)”模型方法。
Diverse return to return analytical result enunciation gradually,to raise the happiness a related factor of old people is to cohabit wi th spouse,higher economic income,bigger housing area.
多元逐步回归分析结果,提高老年人幸福度相关的因素是与配偶同居、经济收入高、住房面积大。
Euro is an active element affecting the economic growth in Europe.
欧元对欧洲经济增长是一个积极因素。
the hallucinatory alkaloid that is the active agent in mescal buttons.
龙舌兰花的积极元素的迷幻生物碱。
THE ACCUMULATE OF RARE EARTH ELEMENT IN BRAIN AND TOXICITY
稀土元素的脑部蓄积性及其毒性效应
Dynamic Change of Microelement Accumulation in Second Rotation Chinese Fir Plantations
杉木二代林微量元素积累的动态特征
The solutions are obtained utilizing the integration of properly weighted centres of dilatation over the volume occupied by the body.
通过体积元素积分得到的调和势函数通过椭圆积分及其导数表示。
The elemental geochemistry characteristics indicate that elements abundance is controlled seriously by grain size of sediment.
元素地球化学特征表明，元素的丰度受沉积物粒度控制明显。
Concentrations of Heavy Metals and Plant Nutrients in Aquatic Macrophytes of Yangtse Estuary;
长江口潮滩植被营养元素和重金属元素累积特征研究
Effects of main mineral element accumulation in the paddy soil in Yunnan province on rice grain
云南水稻土中主要矿质元素对水稻籽粒矿质元素积累的影响
Implementation of biological practice for all-round quality education;
积极开展生物实践 全面实施素质教育
Language Accumulation--The Base to Improve One s Chinese Quality;
语言积累——全面提高语文素质的基石
Positively advancing quality education and promoting students overall development;
积极推进素质教育 促进学生全面发展