低空

The analysis shows that the snowstorm occured under the large scale circulation background of two-trough-two-ridge over the Eurosian continent, and resulted from the coupling of the upper level westerly jet and the low level southwesterly jet.

研究表明：这次暴雪发生在两槽两脊的大尺度环流背景下，是高空西风急流和低空西南风急流上下耦合作用的结果。

The southwesterly low-level jets from the southern South-China Sea and the Bay of Bengal are main systems responsible for the maintenance in intensity of the typhoon and causing the enhancement of the accompanied heavy rainfall.

结果表明，在中高层出现"北槽南涡"的环流形势场有利于登陆台风的维持；源于南海南部和孟加拉湾的热带低空急流汇成的台风南侧的西南风急流是台风登陆后得以维持和引发暴雨增幅的重要系统。

Based on NCEP and other observational datasets, a severe heavy rainfall process occurred in the south of china during June 18-19,1998 was investigated. The first diagnostic analyses show that the strong rainfall are produced by vortex, shear line and upper and lower jets, stationary front. The condition of high energy, saturation, potential instability is propitious to the form and maintenance of this rainfall.

采用NCEP全球谱模式和常规观测资料对98年6月18～19日华南暴雨的影响系统及其可能机制进行了初步诊断分析，发现这次强降水过程是受低槽、低涡、切变线、高、低空急流和地面静止锋共同影响造成的，该地区维持高能、饱和、潜在不稳定的环境，有利于暴雨的产生。

Clement Ader claimed that while he was aboard the Ader Eole he made a steam-engine powered low-level flight of around 160 feet on October 9, 1890, in the suburbs of Paris, from a level field on the estate of his friend.

克莱芒·阿代尔声称他曾于1890年9月驾驶由蒸汽机驱动的"风神号"从巴黎市郊一块属于朋友的开阔地出发，做了离地160英尺的低空飞行。

He teaches novices how to dive and strafe targets, as he did in the attack that killed Lance Cpl of Horse Matty Hull.

他训练新手们如何俯冲并低空扫射目标，正如他在炸死骑兵团下士马蒂·赫尔的袭击中所表现的那样。

For security reasons "drop targets" are located in the most incredible, inaccessible places—ravines, blind canyons, hidden mountain trails. The peaks are perpetually hidden in the thick monsoon cloud deck. Pilots of the 27th Troop Carrier Squadron have two poor choices—weaving and sliding their big ships up and down the creek beds and through the passes beneath the clouds and the mountains, or flying in, or on top of the weather, and letting down by dead reckoning, or through an occasional hole.

为了安全的原因，"空投目标"都在一些难于想象的、几乎到达不了的地方——峡谷、隐暗的溪谷和高山密林中，以及永远都躲藏在厚厚的雨季浓雾的山巅上。14航空队第27军需空运中队只有两个选择——驾驶着飞机在乌云和山峰之间狭窄的缝隙中沿着峡谷的河床低空迂回滑行；要不就钻出偶然出现在迷雾中的空洞去寻找空投目标。

Reaction of HCHO with OH radical is the most important way for HCHO consumption in troposphere.

尤其是它和羟基的反应作为在低空对流层中甲醛重要的消耗途径，更是成为了大气化学家们的研究热点问题之一。

Coaxial, contrarotating and widely separated semi-rigid three-blade rotors, with swept blade tip, attached to hub by steel plates; small fuselage cross-section, with nose sensors; flat-screen cockpit, heavily armour protected by combined steel/aluminium armour and spaced aluminium plates, with rearview mirror above windscreen; small sweptback tailfin, with inset rudder and large tab; high-set tailplane on rear fuselage, with endplate auxiliary fins; retractable landing gear; mid-set unswept wings, carrying ECM pods at tips; four underwing weapon pylons; engines above wingroots; high agility for fast, low-flying, close-range attack role; partially dismantled can be air-ferried in Il-76 freighter.

同轴，并广泛分离的反向半刚性三叶片转子，叶片尖后掠，隶属由钢板枢纽；小机身的横截面，有鼻子传感器；纯平驾驶舱，重装甲保护的组合钢/铝装甲铝及间隔板，前挡风玻璃与后视镜以上；小sweptback尾翼，方向舵与插图和大型标签；高载列于机身后部尾翼，与终板辅助鳍，可伸缩的起落架，中集未波及翅膀，承载的秘诀流脑豆荚；四翼武器挂架； wingroots发动机以上；快速高敏捷性，低空飞行，近距离攻击的作用；部分拆除，可空气中摆渡伊尔76货机。

But they're saying this is a unidentified flying object, low in the sky over the world's second-busiest airport.

但是他们说那是个不知名的飞行器，盘旋在世界上第2繁忙的机场的低空中盘旋。

The allocation of lower level convergence and upper level divergence was favorable to the maintenance of strong updrafts , and the moisture and energy carried by the updrafts was in turn favorable to the genesis and development of convective cloud cluster .

(2)低层辐合，高层辐散的高低空配置有利于强上升运动的维持，强上升气流所携带的水汽和能量有利于对流云团的发生发展，有利于暴雨的维持。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。