查询词典 mixed differential parameter

Stochastic sand trajectories in wind-blown sand were obtained by solving the differential equation which describes the vertical fluctuating velocity of sand grains.

通过对描述沙粒垂向运动速度脉动分量的随机微分方程的直接求解，获得了风沙流中沙粒运动的随机轨迹。

Hot wind furnace; Economic velocity; Anuual cost method; Function differential coefficient method; Analyse of sensitivity

论文导师马世君，论文学位硕士，论文专业供热、供燃气、通风及空调工程

Among the technical highlights is the new all-wheel drive system (Saab XWD - 'cross wheel drive' ), a fully automatic, on-demand system that usese uses an electronically-controlled rear limited-slip differential, which is capable of sending up to 100 per cent of engine torque to the front or rear wheels whenever necessary.

其中的技术要点是新的全轮驱动系统(绅宝xwd '交叉轮驱动')，全自动，点播系统，usese采用了电子控制的后排有限滑差速器，其中，可将高达100%的发动机转速向前方或后方车轮每当必要的。

In case of rear wheel drive and four wheel drive vehicles drive train vibrations can be reduced by balancing the flange of the rear axle differential to give more driving comfort and an improved life of the vehicle .

如果能够平衡后轴法兰，就能减少后轮驱动以及四轮驱动车辆驱动部分的振动，并能不同程度增加驾驶舒适性，延长车辆寿命。

In accordance with field investigation to epidemic dynamics of wheat scab,the forecast method for differential equations of epidemic state has been given respectively.

对小麦赤霉病流行资料进行分析，给出了流行状态微分方程的预测方法。

Based on the Malthus and Weibull differential equations of epidemic state,the cybernetic models of epidemic dynamics of wheat scab were developed according to the extreme value principle,and the optimum control trajectories were given.

根据不同的状态微分方程，以极大值原理建立小麦赤霉病流行动态的控制论模型，得到流行动态的最优控制轨线。

The spectrum features on wheat canopy were studied by measuring and analyzing the reflectance and differential spectrums at 5 infested levels by wheat aphid.

通过对田间不同程度麦蚜危害的小麦冠层反射光谱测量，研究了各波段反射光谱的变异特征，并对光谱反射曲线进行微分分析。

With the abstract theory for parabolic differential equations in Banach spaces, the free boundary problem is locally well-posed in little Hlder spaces is proved.

利用Banach空间中抛物方程的抽象理论证明此问题在little Hlder空间是局部适定的。

The conclusions are accomplished that the differential equations of continuum damage mechanics dependent on the former are ill-posed but the latter are well-posed when the defects in materials grow with loading.

结果表明，当损伤发展时，与Kachanov损伤本构模型相关的连续介质损伤力学的基本方程是不适定的；而与应变梯度损伤本构模型相关的，则无论损伤是否发展，其基本方程始终是适定的。

And then the influence of two of the damage models, the Kachanov and the gradient-dependent constitutive equations, on the well-posed properties of the fundamental equations in continuum damage mechanics is studied according to the characteristic method of the quasi-linear partial differential equations under the case of one dimension elastic damage.

首先从非局部理论出发，推导了应变梯度损伤本构方程；然后利用一阶拟线性偏微分方程组的特征理论，在一维弹性损伤情况下分析了两种不同的本构模型，即Kachanov损伤本构方程与应变梯度损伤本构方程，对连续介质损伤力学基本方程适定性的影响。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。