查询词典 ninety-first

We first got the PML equations by making the radius complex, and then proved that the sesquilinear form in the weak formulation of the PML problem satisfies the Grding inequality under the hypothesis of the absorption factor, and further could prove the existence and uniqueness of the solutions of the PML problem, finally, we gave the numerical experiments which show that this method is feasible to a certain extent.

首先通过复化极径得到PML方程，然后在关于吸收参数的假设下，证明了PML问题变分形式中的半双线性形式满足Grding不等式，进而证明了PML问题解的存在惟一性，并给出了数值实验。实验结果表明，该方法有一定的可行性。

We first got the PML equationsby making the radius complex, and then proved that the sesquilinear form in the weak formulation of the PML problem satisfies the Garding inequality under the hypothesis of the absorption factor, and further could prove the existence and uniqueness of the solutions of the PML problem, finally, we gave the numerical experimentswhich show that this method is feasible to a certain extent.

首先通过复化极径得到PML方程，然后在关于吸收参数的假设下，证明了PML问题变分形式中的半双线性形式满足Garding不等式，进而证明了PML问题解的存在惟一性，并给出了数值实验。实验结果表明，该方法有一定的可行性。

To our knowledge, this is the first investigation of the nonlinear absorption and refractive index of α-Si/SiO〓 superlattices using Z-scan technique.

得到了其三阶非线性极化率的实部和虚部，并与其他硅基材料的相应数值进行了比较。

To make paper more systematic and practical, this paper has first introduced the development history of CT equipment, then, elaborate construction of system and theworking principle of CT equipment systematically, including the property of X-ray, the absorption law of X-ray for materials, the reconstruction principle of CT image, the structure of software and hardware for CT equipment. Finally, with 2 CT systems that we used, statistic and analysis of all the malfunctions which have carried out in passed 10 years was given, and according to the systematic parts of fault located, classify the malfunctions, then elaborate their working principle one by one, analyze the regularity and the characteristic of each malfunction, and put forward specific prevention method and measure for the malfunction.

为了使论文更具系统性和实用性，本论文首先介绍了CT设备的发展史，然后比较系统地阐述CT设备的工作原理及系统结构，包括X射线的特性和物质对x射线的吸收规律，CT图像的重建原理，CT设备的软、硬件结构等，最后以我们所使用的2台CT为例，对10余年来所出现的故障进行了全面的统计分析，并按故障所处的系统部件进行分类，然后逐个阐述其工作原理，分析其故障的特点和规律，并就这些故障提出具体的预防方法和措施。

Evidence of a transient cyclotron absorption line was observed in EXO2030+375 for the first time.

本文作者首次发现了EXO 2030+375的回旋吸收线迹象。

The first step to virtue is to abstain from vice.

蛋白质合成的第一步是转录。

First step to virtue is to abstain from vice.

避开作恶是走向美德的第一步。

In this part, the following two opinions are demonstrated, the first is that keeping abstentious physical demand is the inherent request of sustainable development, the second is that the important goal of sustainable development is all-around development of needs.

第四部分对建立可持续生活方式进行了理论分析和现实考察，并对影响当代中国生活方式的因素、在中国建立可持续生活方式应遵循的原则进行了初步探讨。

The rule does not encourage self-sacrifice or financial abstinence. It doesn't mean pay yourself first and.

这一原则不鼓励自我牺牲或财务紧缩，它并不意味着首先支付自己然后挨饿。

Finite groups of matrices appear early as examples in a first course in abstract algebra, and most of the time these examples are given with integral entries.

矩阵的有限群作为例子最早出现在抽象代数的第一章，通常这些例子中的元素都是以整数元素的形式给出。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。