查询词典 ground field

The program based on the MATLAB is developed for modeling the shadow of the heliostat field and the sunlit time distribution on the ground.

使用MATLAB编程模拟了镜场对地面的阴影以及地面日照时间分布情况，并能够绘制任意时刻地面阴影图和任意时期内地面日照时间分布图。

The shadow of the heliostat field on the ground in the 1 MW solar tower power plant, which will be built in the Yanqing town of the Beijing city, is analyzed.

分析了拟建于北京市延庆县的1 MW太阳能塔式电站定日镜场对地面的遮阳情况。

For calculating the shadow area of the heliostat field on the ground accurately, the calculation method of the shading ratio among the adjacent heliostats is proposed and the theoretic formulas are derived.

为了精确计算镜场对地面的阴影面积，提出了相邻镜面间阴影率的计算方法，并推导了计算公式。

But Changjiang Delta spring perhaps did not think of, it is besides floor space advertisement, appeared again countless challenger, they try " the group goes " another some of markets besides Lou Yu, they " innovation " ground mining is sky of set out on a voyage, old sell the field, university, train, hospital, broadcast over a radio network such as the bank net market, and the world is connected China Na Hehua inspects medium is among them two typical.

但江南春也许并没想到，在楼宇广告之外，又冒出了无数的挑战者，他们试图"圈走"楼宇之外的另一些市场，他们"创新"地挖掘出航空、大卖场、大学、火车、医院、银行等联播网市场，而世通华纳和华视传媒就是其中典型的两家。

The relations of inducing skin current of shielding layer, core voltage and core current with the environment field were obtained. The change of shield layer current wave with grounding state of external shield and core voltage with loading resistance was analyzed. According to the dependence of shield layer current oscillating frequency on electromagnetic wave propagation velocity, conception of transporting line of shield layer-ground with equivalent relative dielectric constant was presented. fited equation of equivalent relative dielectric constant with change of cable height was given.

试验得到九芯电缆屏蔽层感应电流、芯线感应电压、芯线感应电流以及环境场之间的关系；分析了皮电流波形随外皮接地状态的变化，芯电压随负载电阻的变化；基于皮电流振荡频率与电磁波传播速度的关系，提出了屏蔽层-大地"传输线"等效相对介电常数概念，给出了等效相对介电常数随电缆高度变化的拟合式；皮电流计算与测量结果在波形、振荡周期、衰减规律等方面有较好的一致性。

In this paper,elastic and inelastic response spectra are obtained based on the analysis of 110 near-field ground motion records.

前言在近年来的几次大地震中，近场地震动对结构都产生了不同于以往的显著影响。

The main reason is that the condition ismore complicated in open field,and measuring result is much more easily influenced bysome kinds of clutters,like atmosphere attenuation,cloud or fog,the fluctuating of scaleobject and ground clutter and so on.So these factors should be taken into account inpractical measuring,and make some amending processing.

主要原因是外场中情况复杂，测量结果受各种杂波影响较大，如大气衰减、云或雾、定标金属球的波动、地面杂波等，因此在实际测量中应考虑这些因素，并做出相应的修正处理。

Firstly, utilize the historical weather map, adopt the gradient wind formula to calculate the wind field of this area, and correct the wind velocity and wind direction according to four common methods of wind-waves prediction and wave factors of engineering design, the Code of Hydrology for Sea Harbor included, considering the water temperature difference, ground friction resistance, crooked degree in isobar, combined by the influence of the maximum velocity from the near station.

首先利用历史天气图，采用梯度风公式计算该区域的风场，并按照4种风浪预报和工程设计波要素常用的方法，根据水气温差、地面摩阻和等压线的弯曲程度等多种因素结合测站的实测最大风速的影响进行必要的风速和风向修正。

Through analysis of potential vorticity in isobaric surface field, in high-troposphere a positive potential vorticity disturbance before rainstorm generation;positive potential vorticity disturbance in high-troposphere downward, form one vertical disturbance column, now corresponding precipitation develop stage;When near ground arises negative potential vorticity disturbance, precipitation also weaken.

通过对等压面的位涡分析，发现在暴雨发生发展时，在对流层高层有正位涡向下扰动，在暴雨的发展鼎盛阶段，从对流层中高层到地面形成一个垂直扰动柱；位涡柱对地面气旋的发展有较好的指示性，位涡柱形成时刻前后降水达到最强；当近地面出现负的位涡扰动时，降水随之减弱。

As a new exploration method,Ground Penetrating Radar is used in the landmine exploration field.

作为一种新的探雷方法，探地雷达在探雷领域得到了广泛的应用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。