The major differences of the two systems are: phonetic distribution and variation of sounds.
两个语音系统的主要区别之处有：一、语音分布，二、语音变化。
Studied the soil fertility on south slope in Qinling Mountains, the spatial distribution and variation pattern and its relation with altitude.
对秦岭南坡土壤肥力状况、空间分异规律及其与海拔的关系进行研究。
The distribution and variation of sand amount (A) , absolute and relative, at the height layer of 0-10 cm are qualitatively and quantitatively analysed.
本文对0—10厘米垂直高度层内沙量（包括绝对和相对）的分布及变化，进行了定性和定量分析。
Heat transfer model and energy equations for porous plaque have been established, temperature distribution and variation of radiative heat flux are also found.
建立了泡沫多孔板的传热模型和能量方程，同时求得了板内烟气温度分布及辐射热流强度变化。
This paper also studied the distribution and variation characteristics over years of runoff, using variance analysis, regression analysis and Mann-Kendall test.
并用方差分析法、回归分析法和Mann - Kendall秩次检验等方法，研究了开垦河径流的分配和年际变化特征。
Furthermore the distribution and variation of the electrostatic potential and layer ionospheric current density at the northern hemisphere are calculated by the dynamo theory.
继而从发电机理论得到了电离层电位及层电流密度在北半球的分布和变化。
Furthermore, the distribution and variation of the electrostatic potential and layer ionospheric current density at the Northern Hemisphere are calculated by the dynamo theory.
继而从发电机理论得到了电离层电位及层电流密度在北半球的分布和变化。
The distribution and variation of stress and deformation as well as the shape of the tube after forming was obtained. The simulation results were compared with experiments results.
通过数值模拟，得到了成型过程中应力与变形的分布规律，以及成型后异型管的结构形状，并与实验结果进行了比较。
The control method of the ground freezing effect to the surrounding soil is also discussed in the paper. At the same time, the distribution and variation law of temperature, stress and...
同时，现场实测所得温度、应力、位移场的分布与变化规律，对于今后冻结工程具有重要的指导意义。
Therefore, the accurate prediction of the temperature in a well during the process of drilling and the temperature distribution and variation are very significant for safe and high-speed drilling.
因此，准确预测钻井过程中井内温度值，掌握其分布和变化规律对钻井作业安全、快速的钻进具有十分重要的意义。
Objective To understand geographic distribution of mumps virus genotypes and variation of circulating mumps virus strains in Beijing.
目的了解北京地区流行性腮腺炎病毒流行株基因型分布和变异情况。
This model indicates that the distribution of each variation is inhomogeneous in the Fushan gold deposit and the tectonic process is the main controlling factor.
该模式指出，阜山金矿各构造物理化学参量的分布在矿区内是不均匀的，构造作用是控制成矿流体分布与状态的重要因素。
It is practically shown that both horizontal fault distribution and lateral reservoir variation etcetera can be seen distinctly from the seismic data which have undergone derivation processing.
实际资料试验表明，地震资料经求导处理后，不仅可以明显地看出断层的平面展布，而且可以得到储集层的横向变化等有关信息。
The quantitative variation and distribution of the leaves on the canopy were studied too.
研究了树冠上叶量的变化及分布。
A sea ice numerical simulation is useful for forecasting the status and variation of sea ice distribution and its effect on the global climate system with the development of numerical simulation.
随着模拟水平的不断提高，近年来海冰温度场的数值模拟正在用于对北极海冰场的预报以及全球气候变化的研究。
The global distribution drift and seasonal variation of the sea ice are simulated and analyzed by using the monthly climatic atmospheric data.
利用大气月平均气候资料，利用冰海洋耦合模式对全球海冰的分布及其季节性变化、海冰漂移进行了耦合模拟和分析。
The vertical distribution and diurnal variation law of the bioaerosol concentration in Nanjing City.
南京市生物气溶胶浓度垂直分布和日变化规律。
The paper also reviews polyphenolic types , property, distribution, physiological function, biological synthesis and genetic variation in tobacco.
本文还综述了烟草多酚的种类、特性、分布、生理功能、生物合成和遗传变异等内容。
The variation of the spatial distribution of the anomaly region is closely related to the epicenter, geological structure and geothermal activity.
异常区的空间分布演化与震中、地质构造和地热等有密切关系。
The transient temperature of the display case shelves was measured for studying the temperature variation and distribution in the display case by changing the number and the velocity of air curtain.
通过改变风幕的层数和各层风幕的送风速度，实验测试陈列柜运行期间柜内各层搁架上的瞬态温度值，来研究低温陈列柜内温度的变化和分布情况。
On the basis of measurement results, the regularity of general distribution and individual variation of capacity current in coal mine are given.
在对大量实测数据分析的基础上，给出了煤矿电网电容电流的总体分布规律，个体变化规律。
The strain distribution and displacement variation of multi-curvature revolving-shell in the hydro-bulge forming process was investigated by experimental method.
研究了多曲率旋转壳体胀形过程中各部分的应变分布及位移变化规律。
The temperature distribution field and its variation rule was being simulated by controlling environmental temperature and cooling rate.
通过控制环境温度和冷却速度，模拟厚大断面球墨铸件凝固过程温度场的分布和变化规律。
PURPOSE: to study the stress variation and distribution of the periodontium and the tooth initial displacement when the lingual fixate forces were applied to the depressed periodontal height.
目的：研究牙周支持高度降低状态下施加舌向集中力时，牙周组织的应力变化、分布规律和牙的初始位移。
So the model was simplified without consideration of the viscosity variation, and an equation for contamination concentration distribution caused by elevation difference was developed.
在此基础上简化模型，推导出了高差混油浓度分布的基本方程。
This paper analyses the area distribution and periodic variation of intensity of the urban heat island in southeastern coastal cities of Fujian Province.
本文分析了闽东南沿海城市的热岛强度的平面分布和周期性变化。
The vertical distribution and monthly variation of soil water content in Jiamusi City were analyzed.
分析了佳木斯市城市土壤水的垂直分布，土壤水的月蓄水量变化特征。
The vertical distribution and monthly variation of soil water content in Jiamusi City were analyzed.
分析了佳木斯市城市土壤水的垂直分布，土壤水的月蓄水量变化特征。
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