估算

Efficient method was also taken up with for controlling and mitigating methane emissions from paddy fields.In summary, this study showed the feasibility of using new multi-temporal microwaveRadar ALOS data acquired in key dates during rice growing season to extract paddy ricegrowing area was tested. A modified rice backscatter model was developed on the basis oforiginal radiation transfer model for simulating paddy rice backscattering characeteristics. Themodified model and Genetic Algorithm Optimization Tool were synergized to reversephysical parameters and map rice biomass at spatial scale in the study area. At last, on thebasis of paddy rice planting area and farming practice data, biogeochemical DNDC modelwas utilized to simulate quantitatively estimating methane (CH_4) emission from paddy fieldsand represented some specific mitigation scheme.

综上所述，本研究在以下几方面取得了进展：验证了在水稻主要生长期内获得的多时相ALOS／PALSAR雷达数据提取种植面积的实用性；在原有辐射传输模型基础上进行改进，得到了适用于模拟水稻后向散射系数的一阶散射模型；利用改进的模型和遗传算法优化工具进行水稻结构参数反演，并对研究区开展水稻生物量空间分布制图和估算；利用DNDC模型模拟和定量估算稻田CH_4的排放量，进而提出了具体减排耕作措施。

Most of ore body grade was calculated by hand, but in 3D visualization environment it can be calculated quickly and precisely.

矿体的品位、资源量估算以前大多由手工计算完成，在计算机三维可视化环境下，可以快速地实现矿体品位和资源量的高精度估算。

At first, the wind tunnel test and test data process of this study are introduced in detail. A method to calculate expected extreme values of time series with a long time interval is then proposed with its sub-sections based on the classical Gumbel theory for extreme values and the independence of observed extreme values. At last, the extreme values of the wind pressure coefficients of the present wind tunnel test are calculated with the proposed method and methods used widely at present, such as peak factor method, improved peak factor method and Sadek-Simiu method.

首先 介绍了风洞试验及试验数据处理的基本概况；然后在阐述经典Gumbel极值理论的基础上，根据观察极值的相互独立性推导了短时距下极值分布参数和长时距下极值分布参数的关系式，给出了一种由短时距样本推算长时距下的极值估算方法；最后基于风洞试验数据，将常用极值估算方法(峰值因子法、改进峰值因子法和Sadek-Simiu法)和该方法的计算结果进行了比较。

In Chapter III we use the conventional international measurement methods, in conjunction with China"s actual conditions, to re-estimate the amount of China"s capital flight.

第三章运用国际通行的测算方法，结合中国的实际情况，重新对中国的资本外逃额进行估算，经估算中国的资本外逃额1990-2004年15年间的总额达到了6669.2亿美元，这15年的时间段，以2002年为分水岭，2002年以前资本外逃的额度都是正值，2002年以后变为了负值。

In this paper, based on the volume balance equation of water, adopt IPARM method to estimate the soil permeation parameters of Kostiakov-Lewis equation in furrow irrigation, according to a set of field furrow irrigation data to estimate the parameters, and utilizing WinSRFR1.1 software to simulate the water flow in furrow irrigation.

该文以水量平衡方程为基础，采用IPARM方法建立了沟灌Kostiakov-Lewis入渗方程中参数的估算方法，并根据一组田间实测沟灌资料对入渗参数进行了估算，利用WinSRFR1.1软件对沟灌水流运动进行了模拟。

In this paper, based on the water balance equation, infiltration parameters from advance and runoff model method was used to estimate the soil permeation parameters of Kostiakov-Lewis equation in furrow irrigation, according to a set of field furrow irrigation data to estimate the parameters, and utilizing WinSRFR1.1 software to simulate the water flow in furrow irrigation.

该文以水量平衡方程为基础，采用IPARM方法建立了沟灌Kostiakov-Lewis入渗方程中参数的估算方法，并根据一组田间实测沟灌资料对入渗参数进行了估算，利用WinSRFR1.1软件对沟灌水流运动进行了模拟。

The variable load operating mode of the rotary table and swivel was transformed equivalently into stable load operating mode, and the equations for calculating the equivalent weig...

即将转盘和水龙头主轴承由变载荷工况向稳定载荷工况作等效转换，从而导出等效当量动载荷Pm 的计算式及主轴承寿命估算公式，并以 40 0 0m深井钻机水龙头主轴承为例，进行了疲劳寿命的估算

The currency-used equations for calculating the life of the main bearings on rotary table and swivel take no consideration of all the affecting elements. The author offers thereby new equations that take an overall consideration of the load, rotary speed, lubrication, assembling, working environment, material and surface hadness.

针对现有文献给出的转盘和水龙头主轴承寿命估算公式对多种影响因素考虑不充分，与实际工况有一定出入的问题，推导出全面考虑载荷、速度、润滑、装配、工作环境和材料及表面硬度等多种影响因素，估算转盘和水龙头主轴承寿命的新公式。

Based on the analysis of the static starting torque,a novel motor start strategy is proposed in this paper,which can realize motor starting under initial rotor position unknown instance.

因此在起动时需要对转子初始位置进行估算。对于转子初始位置的估算，许多研究者进行了大量的研究，提出了许多解决方案。

The transformation of the yaw moment under differential brake and the impact of the slip ratio and road surface friction coefficient to the yaw moment were analyzed. The distribution method of the brake force was confirmed. After analyzing the observability of the control system, the state observer was designed, the evaluation of the side slip angle was completed and result of the evaluation wan validated.

本文分析了差动制动时整车横摆力矩的变化情况，研究了滑移率和路面摩擦系数对横摆力矩的影响，确定了制动力的分配原则，进行了控制系统的可观性分析，并设计了状态观测器，完成了质心侧偏角的估算并对此估算结果进行了验证。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。