大气现象

Experiments that use single-pulse laser to ablate small steel ball in atmosphere were conducted.

采用单脉冲激光进行了大气环境下激光烧蚀小钢珠实验，得到其推进效应参数，发现并分析了钢珠在不同放置位置时不同的物理现象；为了得到一系列定量实验数据，采用自行研制的激光冲量靶仪进行了单脉冲激光烧蚀推进效应实验测试，得到了不同环境条件、不同靶材料的激光推进效应参数，并与国外的实验数据以及数值计算结果进行了比较。

The theory about magnetic reconnection is adopted usually to resolve and explain various explosive processes observed in the plasma of the solar system;the results and observations in the recent time demonstrate that the reconnection always happens in the magnetospheric plasma, solar atmosphere, and cometic magnetosphere as well as fusion equipments.

磁场重联理论广泛地用于研究太阳系等离子体中观测到的各种爆发过程；近几年来的观测结果也表明，在地球磁层、太阳大气、其它行星磁层、彗星磁尾及受控聚变装置中等都存在磁场重联现象。

The phenomena under investigation are often vexingly complex, and they engage a large array of scientific disciplines: Geology, Geophysics, Geochemistry, Geobiology, Physical and Chemical Oceanography, Meteorology, Atmospheric Chemistry, and Planetary Science.

我们所调查研究的现象通常十分的复杂，因此需要众多学科专业知识的配合：地质学、地球物理学、地球化学、地球生物学、海洋物理学与海洋化学、气象学、大气化学和行星科学等。

This abnormal phenomenon is ascribed to the increase of reactive halogen species in the atmosphere.

这种现象的发生被认为是大气中活性卤素物种的增多而引起的。

Freezing soil is a natural phenomina in cold and mountain areas, which has great impact on the regional climate, water cycle, and water balance. The land surface process in the condition of soil freezing and thawing is one of the most important process in the area. This paper firstly reviews the present study on land surface process in the condition of soil freezing and thawing, especially the development after the the hydrological land surface model introduced into the study of General Circulation Model, then introduces the undergoing international research project, such as Project for Intercomparison of Land-surface Parameterization Schemes and Cold Land Process Field Experiment by NASA, and finally analyses and puts forward the future research field and topics.

冻土是全球中高纬地区和高山地带普遍存在的自然现象，它对全球以及区域性气候、水循环、水平衡等都有着巨大的影响，土壤冻融条件下的陆面过程正是这种影响的重要环节，介绍了土壤冻融条件下陆面过程的研究现状，特别是在大气环流模型中引入水文陆面模型以来陆面过程研究的迅猛发展，对现在国际上正在进行的考虑冻土的陆面过程研究项目，如陆面过程参数化比较计划的第二阶段第五期PILPS (2E)以及美国NASA的寒区陆面过程实地试验计划也进行了介绍，并在此基础上对土壤冻融条件下陆面过程的发展趋势进行了分析。

The present thesis aims mainly at studying power absorption of high frequency electromagnetic waves in partially ionized plasma layer in atmospheric conditions, with effects of negative ions in atmosphere, collision rate between electron and neuter gas, the external magnetic field, and nonlinear effects on power absorption of high frequency electromagnetic waves in partially ionized plasma layer under atmospheric conditions.

本文主要研究了高频电磁波在大气压等离子体层中传播和吸收的特性，着重考虑了大气中的负离子、电子与中性气体的碰撞频率、外加磁场、以及非线性现象对高频电磁波在大气压等离子体层中的传播的物理机制和吸收的影响。

In all the years of meteorological observation that we have, we've never seen anything like this.

在我们观测大气的这些年里，我们从未见过这种现象。

The phenomenon on issue of the ozone hole or ozone reduction in the South Pole or north hole and other midlatitude areas happens in recent years, and more and more attentions are paid to this big phenomenon caused by the human activities.

近些年来，南极地区、北极上空和其他中纬度地区都出现了不同程度的臭氧层耗损现象，人类活动引起的大气臭氧损耗日益得到大家的关注。

This imbalance in the global nitrogen cycle has led to uncontrolled nitrogenemissions into the atmosphere and water systems.

这种不平衡现象在全球氮循环，导致无节制氮气排放到大气和水系统。

Sulfuration occurs on the surface of most mineral particles, especially in summer, suggesting a relatively extensive atmospheric reaction over Beijing in summer.

研究还发现，硫化现象可以发生在不同矿物颗粒表面，且这种现象主要发生在夏季，反映夏季大气化学反应较为活跃。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了