查询词典 variation

But the seasonal variation in the airborn sulfate and MSA are reasonably well reproduced in the surface snow, for timing and spacial distribution.

十分接近的大气和雪冰MSA对nssSO2－4（或SO2－4）比率证实，这两种大气组分在由大气洗净和沉降到冰雪过程中只发生微弱的分离作用。

The results indicate that the surface albedo in this area has obvious diurnal,monthly and seasonal variation characteristics....

结果表明：藏北高原地区的地表反照率具有明显的日变化和月/季节变化特征。

Its lumber material is narrow for the alburnum, distributes in north compared to the south narrowly, light yellow arrives the yellow light yellow, the heartwood to brown brings slightly red; Has the resin, the durability is bad; The lumber texture, the density, standard natures and so on the festival receive the geography condition influence which grows, is widespread as a result of this lumber distribution, but therefore the lumber material the variation is greatly more obvious than because of the condition other tree seeds; The lumber weight is ordinary, solid.

其木材材性为边材窄，分布在北部的比南部的更窄，浅黄到黄色，心材浅黄至褐色略带红色；有树脂，耐久性差；木材的纹理、密度、节子等格质均受生长的地理条件影响，由于该木材分布广泛，所以木材的材性因条件而变异大比其他树种明显；木材重量一般，较结实。

The fundamental idea of this method lies in the fact that the variation of the elastic area of the arch with respect to x can be represented approximately by an elementary algebraic function which can be determined with but little labor.

主要关键在求出一能近似表示拱截面ds/EI变化之代数式，使各项计算均得由直接积分完成，避免分段计和，因而极为简便。

Online regulator design can be easily realized, as only algebraic operation is needed in the provided method. This sets up a theoretical basis for using self-tuning regulator to handle the problem of system parameter variation.

这种调节器设计方法只包括代数运算，适于在线实现，为采用自校正调节器控制，抑制系统参数扰动奠定了理论基础。

It now subtracts where it should be from where it wasn't, or vice-versa, and by differentiating this from the algebraic sum of where it shouldn't be, and where it was, it is able to obtain the deviation and its variation, which is called error.

现在应该耗损而不是从那里，或反之亦然，并从这一区分代数总和不应那里，那里有人、它能够得到偏差及其变化，叫做误差。

As we know, the algebraic sum of Hammett constants for thesubstituted donor and acceptor groups can be used to characterize the asymmetryin simple π-organic systems, to correlate the variation of NLO properties.

推拉多烯对取代基比较敏感，易于观察到结构上的变化，是一种很好的研究对象，对推拉多烯的量化计算研究可以给我们提供分子结构和非线性光学等性能之间的关系。

This is obviously influenced by the base level up and down changings, pore space variation and sediment alimentation. Through analysing the relationship between the course of base level up and down cycles of high resolution sequence strata and the reservoir physical behavior, six heterogeneity models of diff...

通过高分辨率层序地层的短期基准面升、降旋回过程与储集物性关系的分析，建立了6种不同沉积微相的非均质性模式，探讨了向上变深、向上变浅的非对称型和向上变深后复变浅的对称型短期基准面旋回层序对储层非均质性特征的控制作用

A modified method of free radical alkylation has been using for synthesizing of quinone derivatives with an alkyl side chain variation.

应用经过改进的自由基烷基化新方法，合成了一系列的具有长侧链结构的苯醌类化合物。

Results of the HPLC analysis of nutritional compositions showed that there was a significant variation in allantoin among the cultivars.

HPLC成分分析结果显示，各品系恒春山药之间Allantoin成分的含量有明显的差异。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐