Effects of returning maize straw into field on dynamic change of soil microbial biomass C, N and P under different promoted decay condition 不同促腐条件下秸秆还田对土壤微生物量碳氮磷动态变化的影响
In this paper, a mechanics model is founded on effect of spherical dynamic explosion in multiphase medium, based on the systems of blasting pressure decay and of reflection in the interface. 利用爆炸应力波在介质中传播的衰减规律和在界面处的反、透射规律,建立起了集中装药在多相介质中爆炸的力学模型;并运用工程实例来说明这种力学模型的应用。
The design of dynamic output feedback controller to make the system exponential stability is given and the partly largest value of the decay rate using genetic algorithm is obtained. 提出了使得该系统达到指数稳定的动态输出反馈控制器的设计方法。利用遗传算法获得了NCS的事件衰减率的局部极大值。
The decay curves of dynamic elastic module and dynamic shear module are presented on the basis of the decay characteristics of dynamic module. Besides, the strength resisting liquefaction is studied. 通过研究液化过程中动模量的衰减特性,得到了动弹性模量和动剪切模量随应变发展的衰减特性曲线,并研究了砂土的抗液化强度。
Dynamic monitoring of the interior concentration of radon decay product 室内氡子体浓度的动态观测
Based on the generalized dynamic inflow theory and classic non-steady aerodynamic loading theory, a real-time model is obtained by establishing wake distortion and decay. 在广义动态入流理论的基础上,基于经典非定常气动载荷理论,建立了尾迹畸变和尾迹耗散的实时分析模型。
Solving the multimode rate equations analytically, the dynamic process has been described when the laser is switched from one oscillation mode ( or frequency) to another. Meanwhile, we discuss in detail the decay rate of the deviations of the carrier and photon densities. 解析求解多模速率方程,描述了激光器由一个振荡模式跳至另一振荡模式时,系统的瞬态过程,讨论了载流子密度和光子密度的衰减率。
This issue analyzed and concluded the relationship between dynamic and static strength. Further, it obtained the decay law of impending plastic dynamic strength and accumulated deformation with loading cycles of various roadbeds filling under different test conditions. 分析总结了动静强度之间的联系,且得出了各种路基填料的临塑动强度、累计变形等疲劳特性在不同试验条件下的衰变规律。