| 1. | Using the equation of parabola, we obtain for the sheer stresses at any point in the plate .
应用抛物线方程，即可得到板内任意点的剪应力。 |
| 2. | Application of the parabolic equation to calculating electromagnetic scattering of three - dimensional electrically large objects
抛物线方程在计算三维电大目标电磁散射中的应用 |
| 3. | The rotated parabolic equation method was presented to compute the bistatic radar cross section ( rcs )
并提出了旋转抛物线方程算法，实现了目标任意角度雷达散射截面的快速计算。 |
| 4. | The standard parabolic equation method was obtained by the decompocition of the scalar wave equation and the expansion of the pseudo - differential operator
通过对传统波动方程的分解和伪微分算子的近似展开，获得了标准抛物线方程。 |
| 5. | The theory of parabolic equation ( pe ) was presented , and was applied to the scattering analysis of two dimensional perfectly electric conducting objects
摘要对抛物线方程算法的基本原理进行了详细论述，并将其运用到二维导体目标的电磁散射特性分析中。 |
| 6. | Numerical results are compared with that of the analytical solution , it was shown that the complexity of computation was reduced drastically without sacrificing much accuracy
数值结果表明：标准抛物线方程算法在计算目标雷达散射截面时具有较高精度，且计算速度大大提高。 |
| 7. | Used dynamics equation to express the relation between the accumulation amount of no 3 - n leaching and time : urea , ammonium - bicarbonate and composed fertilizer can be expressed as equation yt1 / 2 = a + bt , complex mixed fertilizer can be expressed as equation 1 / y = a + bl / t . the accumulation leaching quantity of no 3 - - n with urea , ammonium - bicarbonate , composed fertilizer and complex mixed
随时间t的变化用方程进行拟合，结果表明ck 、碳按和复混肥处理，以双曲线方程l / y二a + bl八拟合效果最好，而尿素和复合肥处理则以抛物线方程y ， ’ / 2 = a十bt拟合效果最好。 |
| 8. | An apparent activation energy of 182 . 35kj / mol was obtained for the range of 1250 c to 1350 c , and that of 82 . 32kj / mol for the range of 1350 c to 1400 c . at the same time , the relation between reaction velocity and reaction time is linear in the range of 1250 c to 1350 c , but it is a parabola curve in the range of 1350 c to 1400 c . so it can be concluded that the process undergone in the range of 1250 c to 1350 c is controlled by chemical reaction while that in the range of 1350 c to 1400 c by diffusion
本实验采用的试样是以钛白粉和活性碳按1 ： 30的比例混合料为原料，在6mp下成型为37 . 2 26mm的柱形样块，分别在1250 、 1350和1400于氮化炉中测定反应速率与时间的关系。当反应在1250 1350时，表观活化能为182 . 35kj mol 160kj mol ，反应速率与时间的关系是线性的，说明此阶段反应由化学反应控制。当反应在1350 1400时，表观活化能为82 . 32kj mol 160kj mol ，反应速率与时间的关系符合抛物线方程，说明此阶段反应由扩散控制。 |
| 9. | In order to utilize the atmospheric duct phenomena , and to make the electronic reconnaissance facilities more effective and the status of battlefield more advantageous , on the basis of classification of the atmospheric duct , first the model for evaluating the effective detective zone of electronic reconnaissance facility is established , then the numerical value simulation method of electromagnetic wave propagation under the condition of surface duct calculated with parabolic equation and fourier arithmetic is presented , and finally the influences of atmospheric duct on electronic reconnaissance facility is analyzed
为充分利用大气波导条件，发挥电子侦察设备效能，使战场态势向有利于己方方向转化，在介绍大气波导分类的基础上，建立评估电子侦察设备的有效探测区的模型，给出用抛物线方程及其分布傅里叶算法计算电磁波在表面波导条件下传播的数值模拟方法，并分析了大气波导对电子侦察设备的影响情况。 |
| 10. | The stress - strain curve of new - old concrete and hprrc , are suggested to be modeled by two sections : the ascending section of the stress - strain curve is simulated by cubic parabola equation and the descending section is simulated by rational fraction , where the theoretical value is in good agreement with the test value . the research results also provide a theoretical basis of earlier stage for improving crack resistance of new - old concrete interface
新一老硅及hprrc应力一应变全曲线建议采用两段式拟合:上升段采用三次抛物线方程模拟，下降段采用有理分式模拟，理论值与试验结果吻合较好。该研究成果为新老混凝土结合面抗裂能力的提高提供了前期的理论基础。 |
