查询词典 ozone layer

There appear many environmental problems such as the thinner ozone layer, air pollution and dried-up water resources.

在经济发展，科技进步和人丁兴旺的二十一世纪，伴随而至的是全球变暖臭氧层变薄，空气污染、水源枯竭等环境问题。

Every August for the past 20 years or so, the ozone layer over the South Pole, that shields us from the sun's ultraviolet or UV rays has been thinning out, creating a so-called hole.

凯兰 近20年来每逢8月，南极上空保护人们不受太阳紫外线伤害的臭氧层就开始变薄，产生一个&空洞&。

We must seek immediate solutions for problems leading to the rapid depletion of the e arth's ozone layer .

我们必须寻求立即解决引起地球臭氧层快速损耗的问题的办法。

Argentine and the Chilean scientists separately have established the long-term monitor ozone layer empty astronomy observation station in both countries southern city Liaojiayegesi and Punta Arenas.

阿根廷和智利科学家分别在两国南部城市里奥加耶戈斯和蓬塔阿雷纳斯建立了长期监测臭氧层空洞的天文观察站。

In this thesis,the authors analyze the mechanism of roadway roof absciss layer ,point out the demerits of traditional methods of measuring roadway roof absciss layer , treatise the principles and put forward some methods of measuring absciss layer by minging vibration method.

分析了巷道顶板离层的机理，指出了传统测量离层方法的弊端，论述了采矿振动法测量离层的原理，提出了采矿振动法测量离层的方法。

When thecohesion and angle of internal friction is fixed ,the layer failure area becomessmaller with increase of shocrete layer's thickness.also the shotcrete layer has acritical thicknesswith the change of cohesion and angle of internal friction ofshotcrete'sinterface.

初喷接触面粘聚力和摩擦角强度一定时候，初喷破坏区随初喷厚度的增加而减少；接触面强度变化时，初喷存在一临界厚度；初喷破坏区主要集中在节理与洞周的相交处。

The specimens sintered under air atmosphere appear the obvious layering phenomenon, on the whole,and which can be divided into the surface protection layer, the center layer and the non-oxidized layer,SiAlON phase comes into being at about 1550℃,the crystal shape of them is columnar; The specimens sintered carbon reduction atmosphere have no obvious layering phenomenon, the formation temperature of SiAlON is about 1600℃, the crystal shape of them is acicular,fibriform or anomalous.

氧化气氛下，烧成的试样出现明显的分层现象，大致上可以分为表面保护层、中间层和非氧化层，SiAlON相的形成温度约在1550℃左右，多呈柱状；还原气氛下，试样无明显的分层现象，SiAlON相的形成温度约在1600℃左右，多呈针状、纤维状或不规则状。

Through the anatomy of seed, we proved that a semipermeable layer exists in S.sudanense which locates at the innerside of aleurone layer next to undifferential cells. This layer was permeable to water while inhibiting electrolyte leakage and uptake of lanthanum salt.

从解剖学角度证明了苏丹草种子存在半透层，该组织位于糊粉层内侧紧靠未分化细胞处，对水分通透性好，但阻挡电解质渗出和镧盐渗入。

Copy the layer style (right-click on layer and go to Copy Layer Style) and paste it over the rest. Also, create a large ampersand behind all the letters.

复制样式（在图层上点击右键-复制图层样式），复制到所有的字母图层，新建一层，键入一个大大的字母

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。