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It is theoretically demonstrated that the influences of terrain height and orographic heterogeneity are important on the flux of surface long wave radiation over a large scale grid area.

摘要从理论和数值试验两个方面证明地形的非均匀性对网格区地面长波辐射通量的计算有重要影响，海拔高度场的区域平均值及其变差系数是影响网格区地面长波辐射通量的主要因素，仅仅用地表均匀假定下的区域平均参量（如平均海拔高度和平均温度）所计算的网格区地表有效辐射通量值与其真实值之间存在着一定的误差。

In this paper, high-level quantum chemistry calculation methods are used to theoretically investigate basic configuration, conformers, torsion potential energy surface and internal rotation transition state of oxalic acid and oxalyl halides.

第三章采用量子化学的MP2、B3LYP、HF计算方法在6-311++G~水平上，对草酸可能存在的十三种构型进行完全放开的全几何优化及振动频率分析，得到八种稳定构型和五种内转动过渡态构型。

On one paragraphic those who speak of is Keynesia creed runs rampant the confused situation that the Chinese electron business affairs below manages, and this one paragraphic and main those who speak of is how to apply public option to solve electronic business affairs to admit the mistake of policy and error theoretically.

上一章节谈到的是凯恩斯主义泛滥下的中国电子商务管理的混乱局面，而这一章节主要谈到的就是如何运用公共选择理论来解决电子商务发展政策的错误和失误。

A The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp's egg-laying behavior.

我理解选项的意思是黄蜂卵能够寄生的最小的寄主卵的大小可以根据黄蜂产卵的行为从理论上推算出来。

The presumption that new technology about distillation column with a single reactor can be used in photochlorination of acetic acid is first proposed in this paper. The fact that reaction distillation has obvious advantages in the number of theoretically perfect trays and energy consumption was obtained by theoretical analysis between the coupling of reaction and distillation and the independent operation, which lays a theoretical foundation on the application of the distillation column with a single reactor in photochlorination of acetic acid.

本文首次提出了将背包式反应精馏耦合技术应用于乙酸氯化反应的设想，通过对反应精馏耦合和反应精馏独立操作两种情况进行理论分析，发现反应精馏耦合在理论板数、能耗方面均具有明显优势，因而为背包式反应精馏应用于乙酸光氯化反应奠定了理论基础。

They are already being evaluated in clinical trials as potential therapeutic agents for major human neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease and motor neuron disease. However, delivery of polypeptide growth factors to compromised neurons in the CNS is problematic because their plasmatic half-life are very short and their abilities to cross the blood-brain barrier are theoretically null.

然而由于中枢神经系统中存在血脑屏障，神经营养因子类物质难以通过血脑屏障而到达靶部位；同时又因为神经营养因子在体内生物半衰期较短，使得全身性用药效果不够理想，另外还往往产生意想不到的副作用，如何解决这些问题对于深入研究神经营养因子在神经损伤及神经系统退行性疾病中的作用及开展临床应用前景研究有着十分重要的意义。

The article theoretically calculated and analysed the assembly Stress of the pontes to proofread the allowable stress of the plate and rivets.

本文以铆钉为例，从连接部分所受到的装配应力角度进行理论计算分析，校核板件与铆钉的许用应力，分析结构的稳定性，并预测连接部分的破坏部位。

The article theoretically calculated and analysed the temperature stress of the pontes to proofread the allowable stress of the plate and rivets.

本文从连接部分所受到的温度应力角度进行理论计算分析，校核板件与铆钉的许用应力，分析不同温度对结构稳定性的影响，并预测连接部分的破坏部位。

The article theoretically calculated and analysed the assembly Stress of the pontes to proofread the allowable stress of the plate and rivet s.

本文以铆钉为例，从连接部分所受到的装配应力角度进行理论计算分析，校核板件与铆钉的许用应力，分析结构的稳定性，并预测连接部分的破坏部位。

Discussion on the Increased Range of Allowable Stress in the Design Code for Industrial Metallic Piping;2. The article theoretically calculated and analysed the assembly Stress of the pontes to proofread the allowable stress of the plate and rivets.

本文以铆钉为例，从连接部分所受到的装配应力角度进行理论计算分析，校核板件与铆钉的许用应力，分析结构的稳定性，并预测连接部分的破坏部位。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐