范围

Result The population and new case of malaria can be predicted by the quadratic forecast model of population and logarithmic curve model of new case in Chongqing municipal. The prediction range of population is from 3113112 to 3368928, and the range of the new cases rate of incidence of malaria is from 126 to 134 in 2002 year. These two numbers are consistent with actual number of population and new cases, which are 31309038 and 130, respectively.

结果 重庆市人口数的二次曲线模型和疟疾新发病例的对数曲线模型能够对重庆市人口数和疟疾新发病例数进行预测，2002年重庆市人口数预测范围为3113112~3368928人，新发病例数范围为126~134例；分别与实际的人口数（31309038人）和病例数（130例）基本吻合。

This measurement scale is based on logarithms, because the range of possible concentrations of acid is enormous, ranging from none to a whole lot of acid.

这一测量值是以对数为基础，因为酸的浓度范围是非常巨大的，范围从一点也没有到很多很多的酸。

The essay reveals the core question of Frege's logicism: Could we extend Kant's analytic truths to more general logical truths so as to cover some mathematical truths in certain fields?

本文揭示了弗雷格逻辑主义的核心问题：如果拓展康德的分析真理到范围更广的逻辑真理，能否涵盖某一范围的数学真理？

Subsequently, the niche of Longspur epimedium in the range of measured value of main factor in different regions was calculated for the optimal the range of value of main environmental factor for Longspur epimedium growth, based on the results of cluster analysis and combined with field survey the actual situation.

随后，依据聚类分析结果，结合野外调查实际情况，在主要环境因子各段测量值范围上计算淫羊藿生态位，探讨最适宜淫羊藿生长的主要环境因子的数值范围。

Relative study indicate that current doubler rectifier is misfit for high-voltage low-current apply.so This paper proposes a auxiliary net ZVS PWM full-bridge three-level converter, its" improved topology structure and its"topology family in different controlling mode. The principle of these converter is analyzed in detail. Simulation results verify the effectiveness of the proposed converter.

为了进一步简化辅助网络的结构，并解决轻载时，超前桥臂实现软开关困难的问题，提出了一种新型宽负载范围辅助电感ZVS PWM三电平全桥直流变换器，它在基本拓扑结构的基础上只需增加一个辅助电感，利用辅助电感的能量就可以实现宽负载范围内所有开关管的软开关，详细分析了该变换器的工作原理，进行了参数设计和仿真验证。

The range of Simple match coefficient was from 0.5877 to 0.9868 and the range of average was from 0.6732 to 0.7653,with the total average of 0.7237.The result indicated that the soybean population was with lower genetic variation.

品种间的遗传相似系数变化范围为0.5877～0.9868，平均值变化范围为0.6732～0.7653，总体平均值为0.7237，遗传相似系数较高，说明材料间遗传变异较小。

Main features:- Hole spacing 2.25mm-operating voltage: 4.5 V to 24 V-switching offset compensation at 62Hz under - over-voltage Protection - VDD-pin Reverse voltage protection - Short circuit protection open-drain output is hot off - working magnetic field range: DC to 10kHz-output goes low with magnetic south pole contacts marked on the package side, while the higher magnetic flux density and area of S1, As S2-all temperature and supply voltage range magnetic parameters on-chip temperature compensation circuitry of the minimum drift - EMC meet DIN40839.

主要特点：–霍尔片间距2.25mm–工作电压： 4.5 V 至 24 V–开关偏移补偿在62Hz下–过电压保护– VDD-pin反向电压保护–短路保护漏极开路输出被热关断–工作磁场范围：直流到10kHz–输出变低用磁场南极接触封装上有标记边，而更高磁通量密度面积S1，如同S2–全温度和供电电压范围下磁参数的片上温度补偿电路的最小漂移– EMC适应DIN40839。

For Goupitan Hydropwer Station on Wujiang River,over 1 200 anti-uplift anchor pile s are arranged in the water cushion pool to anchor the non-uniform soft rock strata composed of shale,clay rock,silty clay rock,thin layer of marlite and less medium-fine calcareous sandstones etc.

乌江构皮滩水电站水垫塘部位布置了1200多根抗浮锚桩，对页岩、粘土岩、粉砂质粘土岩，及夹薄层泥灰岩和少量中细粒钙质砂岩等不均质软岩层软岩进行锚固，原设计锚桩的间距为2.2m，为了优化设计，缩短工期，在施工前进行了4根锚桩原位抗拔试验，根据锚桩在抗拔过程中周边一定范围内岩体变形沿径向的分布规律，及破坏时裂隙的扩展形态和范围，确定了锚桩的间距，在此基础上提出了锚桩间距的优化方案，并应用于工程施工。

From the point of practice, the massless foundation model is applied for problem of the dam--foundation interaction. The regularity of the natural frequencies of the dam varying with the boundary size of the foundation is studied under various foundation conditions, and then the rational foundation size is decided.

从实用的角度出发，利用无质量弹性地基模型分析坝—地基相互作用问题，研究了不同地基情况下重力坝自振频率随地基边界范围变化的规律，确定了合理的地基边界范围，并分析了相互作用对坝体振型的影响。

When the value of m is on a neighbourhood of 2, the value of η can achieve maximum, on this condition, strength-size effect is very obvious.

在1.65≤m≤3范围内变化最为剧烈，所以当非均质参数m在此范围内时，岩石材料的强度尺寸效应在明显和不明显之间变化幅度最大。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。