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The Topcon KR8100 automatic optometry was applied to examine the refractions and corneal K readings. All the patients received subjective refraction examinations. Allegretto Wave Analyzer was applied to detect the wavefront aberrations of the eyes.

使用日本拓普康公司生产的KR8100自动验光仪的人工晶状体眼模式测量患眼屈光度及角膜曲率,进行主觉验光,使用Allegretto Wave Analyzer波前像分析仪检查患眼的波前像情况。

To improve the precision of tree biomass parameter calculation, this paper explicates the principle, method and process to estimate the parameters of tree biomass by the nonlinear least square according to the formula of allometry method. It gives the formula to calculate the variance and covariance estimated parameters, and reveals the essence of logarithmic linearization regression of power function.

为了提高林木生物量参数的计算精度,根据林木相对生长公式,阐述用非线性最小二乘法求解生物量参数估值的原理、方法和过程;给出计算参数估值之方与协方的公式;揭示幂函数对数线性化回归的本质。

The technique of boundary-fitted coordinate system is used to overcome the difficulties resulting from the complicated shapes of natural river boundaries;the method of alternating direction implicit finite difference scheme is used to solve the partial differential equations in the transformed plane;and the technique of moving boundary is used to deal with the river bed exposed to water surface.

用适体坐标技术克服天然河道复杂的几何边界给有限分法所带来的困难;用交替方向隐式有限分格式求解变换平面上的偏微分方程;用动边界技术处理河床的淹露。

This thesis contributed to the comprehensive study of the Finite-Difference Time-Domain method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies. The work includes mainly three parts: the study on the performance of PML absorbing boundary condition applied to pseudo low frequency electromagnetic problems; the validation of the FDTD method with PML absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna, and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies; the development of an improved alternating direction implicit finite-difference time-domain method.

在综合前人工作基础上,本文对时域有限分法及其在开关电源辐射电磁场数值计算中的应用进行了系统的分析和研究,其核心内容包括:伪低频电磁场数值计算中PML吸收边界条件性能的研究;基于基准问题—电偶极子天线三维辐射电磁场,验证了本文构造的基于PML吸收边界条件的三维FDTD法及其计算软件,并应用于高频开关电源辐射电磁场的数值分析;提出了一种改进的交替方向隐格式时域有限分法。

Objective To study the characteristics and role of wavefront aberrations in children with refractive amblyopia.

目的 了解儿童屈光性弱视波前像的特点,探讨波前像在屈光性弱视形成中的作用。

The instruments used ATmega16L onboard A / D converter channels to achieve the cold wind pressure, the hot blast pressure, the furnace top pressure and cold wind current capacity four way analog acquisition;used PWM waveform produced by ATmega16L internal timing / Counter to achieve the entire differential pressure ,the cold wind flow and the permeability index three-way analog output for recording instruments; realized the cold wind pressure, the hot blast pressure, the furnace top pressure, the cold wind current capacity and the entire differential pressure five group parameter tour demonstration and the fixed-point demonstration by key-elect key's coordination during demonstration blast furnace permeable index; produced acousto-optics alarm when the permeable index across the upper and lower limits;used RS-485 realizing the communication with the superior computer.

仪表利用ATmega16L自带的A/D转换通道实现对冷风压力、热风压力、炉顶压力及冷风流量四路模拟信号的采集;通过ATmega16L内部的定时/计数器产生的PWM波形来实现对全压、冷风流量及透气性指数三路模拟量输出供记录仪表使用;通过键选键的配合在显示高炉透气性指数的同时实现冷风压力、热风压力、炉顶压力、冷风流量及全压五路参数的巡回显示与定点显示;当高炉透气性指数越上、下限时,仪表产生声光报警信号;仪表采用RS-485与上位机实现通信。

The results of range analysis and variance analysis .

进行极分析和方分析。

Analysis of covariance is a combination of regression analysis and variance analysis.

协方分析足把直线回归与方分析结合起来应用的一种方法。

Statistical analysis of an important procedure, the two groups information to the analysis of variance,...

本程序是统计分析中的一个重要程序,是对两向分组资料进行的方分析,使用者只需调入数据,即刻可以得到方分析结果。

Based on the range analysis and variance analysis of the orthogonal experiment, three potential optimal projects were obtained.

通过对正交试验的实验结果的直接观察,极分析和方分析,获得了三个可能的最优方案。

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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。