查询词典 and element

The land is material base of humanity's livelihood,it is the national economy and the social development of precious resources and the important element of production, but land resource's of abusiveness and abuses phenomenon to be serious, at present it is facing serious challenges about the land ecosystem to destroy and humanity living environment pollution and so on.

摘 要：土地是人类赖以生存的物质基础，是国民经济与社会发展的宝贵资源和重要生产要素，但土地资源的滥用和乱用现象严重，目前正面临着土地生态系统破坏、人类生存环境污染等问题的严峻挑战。

Along with the deepening of reform and WTO accession, a number of large tourism enterprises abroad in our country, our tourism competition pattern has undergone great changes, the situation increasingly fierce competition. As a core element of the tourism industry to enhance itself and the whole industry's competitiveness, to win the new situation and maintain competitive advantage in the domestic market internationalization of the domestic and international competition has become a major issues in management of tourism node.

随着我国改革的深化和WTO的加入，国外一些大的旅游企业开始进驻我国，我国旅游业的竞争格局发生了很大变化，竞争形势愈加激烈，作为旅游产业核心要素的旅游景区如何增强自身乃至整个旅游业的竞争力，在国内市场国际化和国际竞争国内化的新形势下赢取和保持竞争优势，成为我国旅游景区经营管理的重要课题。

The general condition for athermalizing an optical system when the object surface is at finite or infinite distance is deduced in this paper, and the principle and design method of employing a diffractive optical element to athermalize and achromatize an optical system with normalized T-C chart are expanded.

推导了物面位于有限远和无限远时，实现热补偿的通用条件；并阐述了利用归化T-C 图设计消热差和消色差的红外光学系统的原理和方法。

The general condition for athermalzing an optical system when the object surface is at finite or infinite distance is deduced in this paper, and the principle and design method of employing a diffractive optical element to athermalize and achromatize an optical system with normalized T-C chart are expounded.

本文推导了物面位于有限和无限距离时实现光学补偿的通用条件，论述了利用归化T-C图设计热补偿和消色差红外光学系统的原理和设计方法，给出了8-12μm波段内、焦距123mm、相对口径F/2.5在20-60℃温度范围内的折衍混合红外光学系统的设计结果和理论评价结果，所述的设计方法可方便地推广到前视红外系统中。

The characteristic approximation is used to handle the convection part along the direc-tion of fluid namely characteristic direction to ensure the high stability of the method in approximating the sharp fronts and reduce the numerical diffusion; The mixed finite element spatial approximation is employed to deal with diffusion part and approximate the scalar unknown and the adjoint vector function optimally and simultaneously; In order to preserve the integral conservation of the method, we introduce the modified characteristic method.

该方法对方程的对流部分沿流体流动的方向即特征方向离散以保证格式在流动的锋线前沿逼近的高稳定性，消除数值弥散现象；对方程的扩散部分采用最低次混合有限元方法离散、同时以高精度逼近未知函数及未知函数的梯度；为保证方法的整体守恒性，在格式中引入修正项。

Further, by means of investigation and admeasurement, theoretical analysis and finite element simulation, the security analysis of ancient brick-and-clay city gate structure are performed.

接着，通过现场检测、理论分析及有限元模拟，对砖土拱城门结构进行了安全性分析。

However , in many states , first –degree murder includes malice aforethought and the additional element of one of the following :A deliberation and premeditation;Ba killing committed during the res gestae of a felony (the res gestate includes all acts in the immediate preparation , actual commission , and immediate escape ); orCmurder by poison , lying in wait , or torture

然而，许多州都规定一级谋杀罪应具备恶意的事前预谋并满足下述诸要素之一： A ）深思熟虑和预谋策划的： B ）在筹划某重罪期间杀人（筹划行为包括直接的准备行为、实际实行行为和随后的脱逃行为）； C ）下毒谋杀、伺机下手、或者用迂回手段杀人。

Besides, should improve the police's political ideology, the business law and professional ethics quality, In order to meet the needs of urban element task, insist that politics is built alertly, strengthen education and organize and study conscientiously. Improve the legal quality of the business, train good professional ethics quality, the strong quality inside, Other tree image.

同时，要提高民警的政治思想、业务法律和职业道德素质，以适应城市基础工作的需要，坚持政治建警，加强教育并认真组织学习，提高业务法律素质，培养良好的职业道德素质，内强素质，外树形象。

The less the oxygen content and the more content of N element in the form of pyrrole-N were observed under stronger microwave power radiation. It was affirmed that the desulfurization capability of activated carbon could be greatly increased by microwave modification. According to the analysis on surface physical and chemical characteristics, a mechanism was concluded: Modified by microwave, functional groups begin to dissociate, alkalescency is enhanced, and surface oxygen content is reduced; the amount of active sites produced by dissociation of oxygen-containing groups increased, so did the pyrrole-N groups. Apparently, the activated energy of SO〓 adsorption decreased.

通过比较微波改性活性炭前后的吸附脱硫能力，结合它们的表面物理和化学性质的变化分析，确认微波改性活性炭的脱硫性能有显著提高，其作用机理在于微波处理后，活性炭表面微观形貌发生了较大的变化，化学基团发生分解，碱性特征增强，表面含氧量减少，以CO形式释出的含氧官能团分解后产生的活性部位和吡咯氮官能团数量增加，吸附SO〓的表观活化能降低。

A numerical simulation technique based on the stable alternating direction implicit method and the upper bound element technique is presented and applied to simulations of extrusion directly following liquid infiltration which involves infiltration,solidification, and large plastic deformation in one process.

采用稳定的交替方向隐式有限差分方法、上限元法等数值计算方法模拟了融浸渗、凝固和大塑性变形为一体的液态浸渗后直接挤压的工艺过程。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。