查询词典 field-glasses

He explored the social function of China's Historical Geography;brought forward the research method of combining literature record with field survey;developed the evolution of geography;set up a monument in the research of environmental changes in the Huanghe Valley;opened up a new field in the research of historical agricultural geogra-phy;unveiled the internal structure of form and evolvement densely-populated areas;settled a base in the research of histo-rical military geography;heightened the research level on the historical cultural geogranhy;made original study on the historical national geography;made systematic study on the issues of transportation in history;made fruitful achievement in the Shaanxi Historical Geography;set up the subject engaged in China's ancient capitals;illustrated the value of chorography;enriched the historical cartology;originated magazines on Chin's Historical Geography;trained a team of research staff in Historical Geography.

他对中国历史地理学史进行了深入研究；发掘了中国历史地理学的社会功能；提出了文献记载与实地考察相结合的研究方法；促进了沿革地理学的发展；树立了黄河流域环境变迁研究的丰碑；开辟了历史农业地理研究的新领域；揭示了人口稠密地区形成和演变的内在机制；奠定了历史军事地理研究的基础；提高了历史文化地理研究的层次；对历史民族地理进行了独到的研究；对历史上的交通问题进行了系统探索；对陕西历史地理的研究取得了丰硕的成果；创立了中国古都学；阐明了地方志的价值；丰富了历史地图学的内容；创办了中国历史地理学的定期刊物；培养了历史地理学的研究队伍。

Having introduced a set of dimensionless parameters, the spatial distributive function of the induced electric field is made dimensionless and is applied to the computation and computer simulation of spatial distribution of electric field induced by a circular coil within half-infinite space.

在确定了一些无量纲参数后，对感应电场的分布函数进行无量纲化，并用于计算圆形线圈在半无穷空间感应电场的计算及其分布的计算机仿真。

Having elucidated the principles of magnetic stimulation, a macro model of magnetic stimulation of excitable tissue is constructed and a method for systematically computing the magnetic field and the electric field induced by circular coil and 8-shaped coil is put forward.

本文在阐明磁刺激基本原理后，建立了磁刺激可兴奋性组织的宏观模型。系统地推导出圆形、8字形线圈磁场及产生的感应电场的计算方法。

This paper establishes a mathematical model of the gas flow field inside separating column of the circumfluent circulation cyclone separator based on the N-S equation under column coordinate,gives the resolution of the cyclone flow field in separating column with weighted residual method,and compares computation values with trial values as well.

由柱坐标系下的Navier-Stokes方程出发，建立了环流循环除尘系统分离柱内流速场新的数学模型，利用具有成熟使用经验的加权残值法对流场进行求解，并与实验结果进行了比较。

In view of practical problem during Sulige gas field development, this paper complete follow study content. Study material balance theory of two district compound gas reservoir. Carry out stress sensitivity experiment on matrix rock and labor created fracture core from Sulige gas field with America Core Company high pressure high temperature flow experimental instrument to study stress sensitivity change rule of different permeability matrix rock and created fracture core at the condition of time and again switch on and off well and different drawdown pressure. Carry out depletion experiment on matrix rock of different permeability serial combination with different kinds of allocation, using double core clamper serial connected experimental apparatus, to study gas well production performance of bi-zonal compound low permeability reservoir during low pressure production stage. At the basis of experimental study, establish single well simulation model to analyze development index infection caused by stress sensibility and production performance infection rule caused by inner formation and outer formation of bi-zonal compound gas reservoir permeability variation while considering stress sensitivity.

针对苏里格低渗气田开发中存在的实际问题，完成以下研究内容；研究了两区复合气藏物质平衡原理；利用美国岩芯公司高温高压流动实验仪，对取自苏里格气田基质岩芯和人工造缝岩芯进行应力敏感实验，研究不同渗透率基质岩芯和造缝岩芯在多次开关井和不同生产压差条件下的应力敏感变化规律；采用双岩芯夹持器串联实验装置，对不同渗透率串联组合的基质岩芯进行各种配产条件下的衰竭实验，研究两区复合的低渗储层气井在低压生产阶段的生产动态特征；在实验研究的基础上，建立单井模拟模型分析储层应力敏感性和非均质性对开发指标的影响，研究考虑应力敏感时两区复合气藏储层中内区和外区渗透率变化对开发动态的影响规律。

Line 3: Import the Text field that we will use as base class for the HTML field.

第3行：导入文本，我们将用它作为HTML域的基础类。

Choose a field to edit or add a field to the class.

选择一个字段编辑或增加一个字段到类中。

Field in the inner class hides a field with the same name in the outer class.

内部类中的域在外部类中覆盖了一个相同名字的域。

The conclusion can be obtained that the interior scattering sound field can be expressed as the superposition of the interior scattering sound field of the arbitrary-shaped closed thin shell and the external scattering sound fields of these scatterers.

研究结果表明，该内部散射声场可表示为封闭薄壳的内部散射声场和这些散射体的外部散射声场之和的形式。

Its distinct advantages are simple implement,and that the calculation of any far field component depends only on the value of near field component at the same time over a closed surface.

论文还改进了时域有限差分方法中的总场散射场的分离技术，消除了原来因为分离带来的计算误差，提高了散射计算的精度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。