观测得到的

First, under certain detectability that the system satisfies, the sufficient conditions are presented for the asymptotic convergence of the observer error by using the singular value theory. The method of solving gain matrix is presented based on the Riccati equation.

首先， 当系统满足某种可检测性时，利用奇异值理论得到了使得观测误差渐近收敛的增益矩阵需满足的充分性条件，并基于Riccati方程给出了计算增益矩阵的方法。

By using data of Nobeyama radio heliograph, we calculate value of magnetic field in lower corona in some active region from thermal bremsstrahlung, and preliminary result has been obtained.

利用Nobeyama射电日像仪的观测资料，以热轫致辐射机制为基础对一些活动区的高层大气磁场进行了估算，得到了一些初步的结果。

Aiming at bottom roof caving and support impact problems induced with abrupt large scale caving upper roof in face 21303 of Daliuta mine, this paper put forward the motion parameter at roof caving and calculation formula of roof shear breaking force with the help of theorem of momentum, theorem of moment of momentum and D' Alembert principle. Roof caving process was simulated by Ansys Ls-DYNA program, and maxim impact force was got. The theoretical research outcomes in the paper were applied in face 21303 of Daliuta mine, and were accordant with actual observing status of roof caving process.

针对神东煤炭公司大柳塔煤矿活井21303综采工作面，上层采空区顶板突然大规模垮落对下层顶板及支架的突然冲击问题，文章采用动量定理、动量矩定理、达朗伯原理推出了顶板垮落瞬间的运动量及顶板切顶垮落所需要的剪力值计算公式，用ANSYS LS-DYNA程序对顶板垮落过程进行了数值计算，得到了最大冲击力，在大柳塔煤矿活井21303综采工作面对顶板垮落特征进行了实际观测和理论成果验证。

All together 6 vibrationalbands of the CrS 〓 transition Ω=-1 subband were observed.

我们共观测到CrS分子〓跃迁的6个振动带Ω=-1的子带，分析得到了有效光谱参数。

The morphologies formed were characterized by SEM and DLS methods, and spherical particles with various sizes were observed.5. To obtain a amphiphilic dumbbell-shaped copolymer, we successfully synthesized dendritic-linear-dendritic triblock copolymers composed of linear polystyrene and poly dendrons.

树枝状共聚物最外层PSt-PNAS链段利用乙二胺和NAS活性酯的取代反应交联，同时，中间的聚丙交酯段被降解，得到纳米空心球，用SEM和DLS进行观测和表征。5。

Microstructure-evolution of the silicon nitride ceramics sample during sintering process was investigated by a synchrotron radiation X-ray computed tomography technique. The projection images of the sample were obtained during the sintering process in real-time. 2-D and 3-D reconstructed images were obtained by treating the projection images of different sintering periods with filter back projection arithmetic and digital image processing methods.

利用同步辐射CT技术，在氮化硅陶瓷样品烧结过程中对其进行实时投影成像，并应用滤波反投影算法和数字图像处理技术，得到了样品在整个烧结过程中内部微结构演化的二维和三维重建图像，实现了对陶瓷固相烧结过程实时、无损的观测。

Using many models and methods provided by GIS software, we obtain more accurate areal rainfalls of a catchment.

新的点雨量观测数据输入训练好的网络，即可快捷得到本次降雨流域面雨量。

Magnetic fields are believed to have a vital role in regulating and shaping the flow of material onto and away from protostars during their initial mass accretion phase.

两个小组在本期Nature上发表了观测证据，它们支持关于相似天体物理问题的相关理论，这些理论人们长期以来都认为是正确的，但却没有得到确认。

To grasp the influencing rule of negative friction, field prototype observation of sheet pile foundation slab and scientific free pile is carried out and many precious data are collected.

为掌握负摩擦的影响规律，现场进行了原型观测，对象是板桩承台和科研自由桩，得到了宝贵的资料。

Demographers have been tracking this now for forty years, and it is a well-established observation: people in good marriages lead healthier lives.

人口统计学家已经就这个研究了四十年了，现在有个得到了确认的观测结论：婚姻美满的人活得更健康。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。