查询词典 weighting

Transpiration rate、transpiration quantity and ground evaporation quantity of plants and leaves of Avena Sativa, Pisum Sativum, Bromus Innermis, Medicago Sativa are measured by using improved QCWC (quick and continuous weighting after being cut off method) in July, August and September.

采用改进的离体连续快速称重法对7~9月燕麦、豌豆、无芒雀麦(Bromus、Innermis)、紫花苜蓿枝和叶片的蒸腾速率、蒸腾量及土面蒸发量进行了测定。

growth of potted seedlings of duchesnea indica and parthenocissus quinquefolia at different irrigation levels was studied by weighting. their drought-resistance was analyzed by difference significance to guide landscape irrigation management.

小 摘要：采取盆栽称质量法研究了蛇莓和五叶地锦在不同灌溉量处理下的生长状况，通过差异显著性分析确定其耐旱水平，以期为园林灌溉管理提供指导。

The Lexicographic method has subjective and empirical character,so a weighting coefficient is introduced by considering the importance and proportion of each individual object,the preferable result of every individual object can be confirmed by comparing the degree of similarity between the perfect one and the ecumenic one and the Fuzzy optimization will be perfect.

多目标最优化问题最早的出现[1]，应追溯到1772年，当时franklin就提出了多目标矛盾如何协调的问题。由于多目标优化的特点，只有很少问题具有满足所有目标函数最优化的&最优解&，而大多数情况只有一个折衷意义的&偏好解[&2，3]。

Three factors (the total rate of win, the difficulty and the benefits execratory of winning a big prize) which influence the attraction to buyers are considered, and attraction function to evaluate the scheme's rationality is structured using classification weighting method. 3 Buyers'psychological curve is introduced and a model to describe the attraction of a scheme to buyers is built. Based on this, a model to find better lottery scheme is structured considering various constraints, and an optimal scheme is obtained under given constraints using paragraph division method. 4 Several plans for development of our future lottery are proposed by referring to the successful experience of overseas.

主要工作如下： 1对彩票概况以及彩票业的发展史和趋势进行简单介绍； 2综合考虑总中奖概率、高项奖中奖概率以及中大奖的期望收益等影响彩民吸引力的因素，采用分类加权法构造吸引度函数来评价方案的合理性； 3引入彩民心理曲线建立模型来描述方案对彩民的吸引力；在此基础上考虑各种约束条件，建立寻求更优彩票发行方案的模型，并采用分段遍历搜索方法求出给定约束下的最优方案； 4借鉴国外成功经验，对未来我国彩票业的发展提出几点设想。

The principle of extrafocal radiation could be used for the calculation of monitor unit. An equation,, is derived to calculate the equivalent field size of a rectangular field, where k is the geometric weighting factor.

计算监控单位可利用非射源产生之辐射的原理，导出公式并接著加以计算，公式中K值为几何比重因子，Varian 21EX直线加速器为1.49。

The growth of H. fusiformis was determined by weighting the fresh algae every two days and the photosynthetic oxygen evolution was assayed by a Clark-type oxygen electrode. To determine the contents of chlorophyll a and UV-absorbing compounds, methanol extracts from H. fusiformis were scanned from 250 to 750 nm. The concentration of chlorophyll a was calculated using the equation of Porra and the contents of UVAC per fresh mass were estimated by determining the ratio of UVAC to chlorophyll a according to Dunlap et al and multiplying the ratio of chlorophyll a content to fresh weight of the sample used.

羊栖菜的生长是通过每两天测量一次藻体的湿重来测定的，光合放氧是用Clark型氧电极测定的，为了测定藻体叶绿素a和紫外吸收物质的含量，从250 nm到750 nm对羊栖菜的甲醇提取液进行扫描，叶绿素a的浓度用Porra的公式计算，紫外吸收物质的计算是根据Dunlap的方法先计算紫外吸收物质和叶绿素a的比率，然后乘以每单位藻体叶绿素a的含量。

In the chapter 7, a new type of highly reliable and multifunctional hydroturbine microcomputer-based governing system is studied and developed; the structure design principle of microcomputer-based system is described and discussed; based on the adaptive control strategy with optimized PID parameter, a combined control strategy of frequency and phase with variable weighting factor is presented; in the design of hardware and software, the fault diagnosis, fault tolerance and fault avoidance techniques are adopted, and the suitability and reliability are greatly improved.

第七章研究开发了一种新型的高可靠多功能水轮机微机调节系统，论述了微机系统的结构设计原理，在适应式PID参数优化调节控制策略的基础上，提出了机组空载运行时的变权系数频率和相位综合控制策略；在微机调节控制器的硬软件设计中，全面应用了故障诊断技术、容错处理和避错处理技术，大大提高了整个系统的适应能力和可靠性。

In this thesis, an improved method is proposed to overcome the problem that the circular color histogram method does not take the spatial information of colors into account , combines spatial distribution information with image color features. The presented method adopt color space which has the visual uniform , three components carries on no laddered quantification, three components weighting summation composes the row of the circular color histogram construction, and improves retrieval quality, while rotation and translation invariance of color histogram are kept.

针对颜色直方图对图像的空间信息表现不够的问题，本文提出并实现了环形颜色直方图的改进方法，将图像颜色特征和颜色的空间分布信息相结合，采用具有视觉一致性的颜色空间，并把各通道分别进行非等间隔量化，采用各通道向量加权的形式把各通道组合为一个特征向量，提高了检索质量，并保持了原有算法的有效性和旋转不变性。

MATERIALS: Twenty-nine healthy adult dogs, weighting 16.5±2.2 kg, aged 4.1±0.7 years; Closed animal osteoepiphysis determined by X-ray. METHODS: One of the dogs was picked out randomly to dissect the femoral artery and femoral vein.

材料：成年健康家犬29只，体质量(16.5±2.2) kg，年龄(4.1±0.7)年，X射线片确定动物骨骺已经闭合。

The traditional economic evaluation of oil/ gas exploration projects is a single analysis essentially: either by characterizing the investment return gained from the ex ploration projects, or by weighting the geologic risk borne by the projects.

传统的油气勘探项目经济评价方法基本都是单一的分析：或表征勘探项目所取得的投资收益，或衡量项目所承担的地质风险。

I think he's learned how to approach hitters....

Johhny Damon说，『他已是最好的了，再没有人能够比他做的更好，我想他的球技已经完全成熟了，而且他也已经学会了如何去对付和压迫各种打击者。。。。。。

In effect, an 18 foot King Cobra could actually look down onto the average human being.

际上，一个18尺眼镜蛇王其实可以俯视到的平均人。