| 1. | According to property rights characteristics relations and factors of r & d institute , definitude golden rule for property rights reform 根据应用开发类科研院所产权特征、产权关系及其各种因素,明确了应用开发类科研院所在转制中产权改革的指导思想和原则。 |
| 2. | Based on the exact solution of the static nonlinear bending problem which is given in reference [ 2 ] , the characteristic relation between the natural frequency and the static load is gained by means of the modified iteration method 静平衡问题采用文献[ 2 ]给出的精确解,在此基础上用修正迭代法求解,得到了其固有频率载荷特徵关系。 |
| 3. | Using basic equations in continuum mechanics , the wave - motion equation in the geometrical nonlinear elastic rod is derived , and then the characteristic curves and their characteristic relations are deduced by the characteristic line method , and the alterations of the wave profiles are analyzed during propagation 利用基本方程导出了弹性细杆的几何非线性波动方程,用特征线法求得它的特征线和特征线上的相容关系,分析了波形在传播过程中的变化规律。 |
| 4. | According to the module of the consolidation settlement curves and their characteristic relations , we design the simulation system of the large test platform , this paper introduce the whole design thought of the test platform , and emphasis on the analysis design of the critical segment in the design procedure 根据以上得出的固结沉降曲线形式及其特征关系,进行了大型沉降模拟试验系统的研制工作。本文主要阐述了试验系统的总体研制思路,重点讨论了研制过程中关键坏节的技术设计,并对整体试验系统的沉降模拟适应性进行了理论分析,确定了研制方案的可行性。 |
| 5. | Working at automatic mode the system can transmit the data to computer through the parallel port which work at epp ( enhanced parallel port ) mode . then the computer shows the characteristic relation curves and acquires the characteristic arithmetic expression . the sampling frequency reach to 4khz , the core of control system is microcontroller uint ( mcu ) 89c51 , the data acquisition is 12 bite 也可以工作在自动方式下通过并行接口(工作于epp模式) ,把测量到的数据输入计算机,在计算机上显示特性参数间的关系曲线,以及求出参数间的数学关系式,其采样频率可达4khz 。 |
| 6. | Furthermore using the variation principle in the elasticity , the wave - motion equation is derived in the finite deformation elastic thin rod with viscous and transverse inertia effects , and the characteristic curves and their characteristic relations are obtained by characteristic line method , and the influence of viscous and geometrical - dispersive effects on the propagation of wave is analyzed 再利用弹性力学中的变分原理,导出了同时计及粘性和横向惯性效应时的弹性细杆的几何非线性波的波动方程,用特征线法得到它的特征线和特征线上的相容关系,分析了粘性耗散和几何弥散效应对波的传播速度的影响。 |