查询词典 angular coefficient

In order to overcome the difficulty in estimating the ripple component on dc-side capacitor reference voltage, the modified control algorithm is proposed by ignoring the ripple component. Furthermore, the relation between control performance and damping coefficient is researched. In addition, the reasons of voltage source converter inner-loop control overmodulation are also analyzed. Based on the relation between control performance and VSC inner-loop input saturation, damping coefficient is adjusted on-line by fuzzy logic reasoning so that the trade-off between control accuracy and limitation of VSC inner-loop control overmodulation is solved preferably.

由于在线计算直流电容指令电压波动量十分困难，在控制方法的执行中忽略波动量的影响，简化了控制方法的实现；此外，该方法还研究了所注入的阻尼大小对控制效果的影响以及APF内层控制过调制产生的原因，针对无源性控制律跟踪精度的要求与内层控制过调制限幅条件间的矛盾，通过构造模糊逻辑推理环节实现阻尼系数的在线调整，在满足内层控制限幅条件下确保跟踪精度和补偿效果。

Account overstrength coefficient which varies from structure type,ductility degree and degree of statical indeterminacy,and suggest smaller overstrength coefficient for these systems which have lesser degree of statical indeterminacy.

根据结构类型、延性等级以及结构的超静定次数的不同考虑了不同程度的超强，并对超静定次数偏少的结构采用偏低的地震力降低系数。

The good results were reached in the practical application. The relative error is -2.58~2.90%, the determination coefficient is 0.9737, the relative standard error is 0.50%, and the variation coefficient less than 0.8% for the analysis of water content in ammonia oximate system by NIS.

本论文利用近红外光谱技术分析己内酰胺生产过程中水体系中己内酰胺含量、苯体系中己内酰胺含量、氨肟化反应液中的水含量，经过试验，取得了较好的实际应用效果。

In the submodel, the reflection coefficient of the canopy changed with the sine of the solar angle and the relationship between the extinction coefficient for photosynthetically active radiation and PDT was quantified.

模型引入高斯积分法简单有效地计算冠层每日的总光合量，并考虑了冠层辐射反射率的日变化及消光系数随生理发育时间的变化，使模型对冠层辐射吸收与光合作用的定量更加准确。

In this study, based on the Rnl, extinction coefficient k, transition coefficient of canopy layer stomatic resistance K', aerodynamics resistance ra and rc calculated with the data of Rn, LAI, rsi, the daily transpiration variation of Picea purpurea, Larix principisrupprechtii, Hippophae rhamnoides ,Betula platyphylla and Populus cathayana were studied in Datong County, Qinghai Province. Comparing with the practical transpiration variation measured by Li1600 Steady Porometer, the relative error of this model was less than ±15%, and the results were stabilized and tested by precision analysis.

本研究通过对Rn、LAI、rsi的实地观测，确定了林冠截流净辐射、消光系数、冠层阻力转换系数、空气动力学阻力和冠层整体气孔阻力，对青海大通地区紫果云杉、华北落叶松、沙棘、白桦和青杨的日蒸腾过程进行了模拟，与用快速称重法订正的Li1600稳态气孔仪实测蒸腾结果对比，模拟的相对误差在±15%以内；模型敏感性分析发现，温度、LAI以及rsi是决定模拟结果的主要参数，模型对各参数变化反应不敏感。

Create Jinfeng 62 (1.2MW) temperature model of mathematics and physics about permanent magnent synchronous generator in wind power, present basic hypothesis and boundary condition. select area that one slot opposite to calculate, utilize FEM calculate roter and stator temperature field. bring forward actual method, carefully analyse the result to generator temperature field, for example reduce coil insulation thickness, decrease conduction coefficient because insulation aging between circle, increase iron-core anisotropism conduction coefficient.

建立了金风62型(1.2MW)永磁同步风力发电机的二维温度场的数学和物理模型，给出了计算边界条件和分析假设条件，以一个槽所对应的电机计算区域，利用有限元方法计算发电机的定、转子温度场，详细分析了绕组线棒绝缘厚度减小、匝间绝缘老化致使导热系数减小、铁心各向异性导热系数提高等参数改进对于发电机温度场的影响。

The genetic similarity coefficient analyses The genetic similarity coefficient between 85 accessions and their original backgroud Stylosanthes distributed between 0.6598 and 0.8351, in which No.3 accession was minimum, and No.85 accession was maximum.

在田间表现较好的7个株系中，2号与86号的相似系数最小，为0.6960，遗传距离最远；综合田间观察和AFLP分析，2号株系表现最佳，有望成为替代热研2号柱花草的新品种。

This method is about which bridge engineering quality is integrally evaluated by using the fuzzing mathematical, hi the course of fuzzy integrated evaluation, firstly, the specialists weight coefficient is defined and the score of qualitative indexing is calculated. Moreover according to the practical situation for project, the specialists present the weight coefficient for subdivisional project and partitioned project.

在建立模糊综合评定模型的过程中，首先确定专家的权重，计算定性指标的得分；再由专家根据工程实际情况给出分项、分部工程的权重，根据分项工程的评分，计算其隶属于评定等级的隶属度；最后由模糊数学模型对桥梁工程质量进行模糊二级综合评定，得出最终的评定结果。

The thesis makes a wellbore pressure and temperature distribution allegiance calculation forecasting model which takes the seawater temperature field and coefficient of heat transmission into account based on the study of the related theories. And the thesis makes a research of the impact of Reynolds Number upon drag coefficient based on the classical Tunner Droplet Model, and makes the critical flow rate model of liquid lift for Ya 13-1 gas field from the perspective of security.

通过理论研究，建立了考虑海水温度场及传热系数的适用于崖13-1气田的井筒压力、温度分布耦合计算预测模型；从气井积液机理研究出发，建立了高低气液比携液临界流量的计算模型，在高气液比携液临界模型的推导中，以经典的Tunner液滴模型为基础，研究了雷诺数对曳力系数的影响，从安全考虑建立了适用于崖13-1气田的携液临界模型。

A kind of charge structure which is only used to reduce ballistic temperature coefficient of high ＆ normal temperature while unchange the coefficient of normal or low temperature is developed. The mechnism that this propellant takes effect and the conditions which the propellant should have are advanced.

试制了一种只降低高常温弹道温度系数但不改变常低温弹道温度系数的装药结构，提出了这种低温感包覆火药应具备的条件和发生作用的机理。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。