查询词典 characteristic curve

Occurrence records from 1864 locations and 34 environmental variables from Daymet datasets were gathered, four modeling methods including Logistic Regression, Classification and Regression Trees, Genetic Algorithm for Rule-Set Prediction and maximum entropy method were used to generate potential geographic distributions for Dreissena polymorpha in the continental USA. Then three statistical criteria including area under the Receiver Operating Characteristic curve, correlation and Kappa were calculated to evaluate the performance of the models, followed by analyses of major variable contributions.

论文以1864个美国外来入侵物种斑马纹贻贝定点发生数据和开放式基础地理信息数据库Daymet的34个环境变量为主要信息源，采用逻辑斯蒂回归、分类与回归树模型、基于规则的遗传算法、最大熵法4种途径，建立美国大陆部分潜在生境预测模型，从接受者运行特征曲线下面积、Pearson相关系数、Kappa值3个方面来检验模型预测精度，在此基础上分析斑马纹贻贝的空间分布规律及其环境影响因素。

This paper put forward the optimized methods include reconstructing the characteristic curve by reasonable use of the adjust tools and analyse tools of the modeling software, admeasuring the automotive model surface correctly, simulating the breaking surface and creating the surface in the right turns which is good for modeling a smooth and exactitude surface.

本文通过合理利用反求软件中的造型工具和分析工具，正确划分反求模型的造型区域，使用正确的曲面造型方法，对反求曲面的特征网格线进行二次优化，并对突变曲面进行拟合再生成处理及建立合理的曲面生成顺序等方法，最终获得了仿型度和光顺度都很高的反求曲面。

The main concern is using fault current to set relay Tap changer, and drawing the characteristic curve to discuss the effect of load models on their setting.

主要是利用故障电流设定过电流电驿之电流分接头设定值，并绘制其特性曲线以便电驿快速设定，及分析电驿受负载模型的影响。

Small deformation in the rubber parts within the preload can be approximately negligible, but the large amount of local deformation, rubber non-linear characteristic curve of a stronger, more obvious the role of preload.

在橡胶件的小变形范围内，预紧力可以近似忽略不计，但变形量大的地方，橡胶件的特性曲线非线性较强，预紧力的作用较为明显。

Direct-driven non-linear proportional valve that the flow characteristic curve was non-linear was designed to reduce hydraulic impact in the reversing process of proportional reversal valve.

为了进一步降低比例换向阀换向时产生的压力冲击，设计了流量特性曲线为非线性曲线的直动式非线性比例换向阀，在AMESim中建立了直动式非线性比例阀及试验台仿真研究模型。

This paper demonstrates that the shading image of caliche lamination can be obtained by using an ordinary scanner, and then the characteristic curve of the image can be automatically est

初步研究表明，这种方法是可行的，它不仅提高了定年的精度和时间跨度，同时也拓宽了沉积物年代学方法在古环境及古气候研究中的应用

The research contents of this subject are mainly: Proposing the overall scheme of the soft firing technology, than confirm the best scheme; On the basis of best scheme , set up the mathematical model of soft firing system, and set up the interior ballistic trajectory calculating model among MATLAB/Simulink, set up soft the three-dimensional dynamics model of firing system among ADAMS; Go on joint simulation, simulating the characteristic curve of bore pressure and the sport law of piston and shot; Through adjusting the parameters such as piston quality、the diameter of unilateral valve、 charge weight、charge form coefficient and the delay time of lighting fire etc to make the soft firing system reach the best state of dropping the composition of forces of gun bore and increasing initial velocity of pill.

论文的研究内容主要是：提出软发射技术总体方案，确定最佳方案；在最佳方案的基础上，建立起软发射系统的数学模型，并在MATLAB/Simulink中建立内弹道计算仿真模型，在ADAMS中建立软发射系统的三维动力学模型；进行联合仿真，模拟膛压特征曲线及活塞和弹丸运动规律；通过对活塞质量、单向阀直径、装药量、药形系数、点火延迟时间等参数进行调整，使软发射系统达到炮膛合力下降、弹丸初速提高的最佳状态。

Voltage characteristic curve can full y reflect performance of sensor with carrier of catalyst.

电压特性曲线能比较全面地反映载体催化型传感器的性能。

The stiffness of Air spring suspension can be controlled through adjusting air pressure in air spring and the expected characteristic curve can be obtained.

空气弹簧悬架可以通过对空气弹簧刚度的调节和控制，得到较为理想的悬架特性曲线。

Afterwards, dynamic tests to machining center were processed by using sine wave excitation, pseudo random excitation and impact experiment methods.(3) The frequency-domain parameter identification method was used after the experiments, through which system mode parameters, system characteristic curve and system mode shape were obtained.

运用频域模态参数识别法，得到了系统的模态参数，绘制出了系统的特性曲线，并得到了系统的振型；对所得结果进行了模态拟合验证，较好地揭示了系统的系统特性，为动态优化设计奠定了基础。

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。