上升气流

He included in his column of air the way convective updrafts carry heat up from the surface, a basic process that nearly every earlier calculation had failed to take into account.

在他的模型中，他加入了上升气流携带的热力的影响。这个基本的过程是几乎早期的每个计算方法都忽略了的。

The velocity of updraft is increased by the action of electric field force.

在电场力的作用下，上升速度增大，即雷暴中的电场力促使上升气流速度的增加。

As the hot air rises, a powerful updraft is also created by the tower that allows air to be continually sucked through 32 turbines, which spin to generate power 24 hours a day.

当热空气上升时，一股有力的上升气流被可以让32个涡轮持续吸引的塔所生成，那些涡轮可以产生24小时的动力来纺纱。

Strong turbulence in an otherwise cloudless region that subjects aircraft to violent updrafts or downdrafts.

其他无云地区的强烈的湍流导致飞行器屈从于强烈的上升气流或下降气流。

ZetaTalk Explanation 10/10/2009: Air updrafts or downdrafts are not uncommon, the most common form the tornado.

齐塔人之声2009年10月10日"解释"：空气的上升气流与下降气流是正常的现象，最常见的形成是龙卷风。

In updrafts, the authors claim, they fly just enough to counterbalance gravity. In downdrafts, they stop flapping and sink.

在上升气流中飞行，他们利用拍翅抵消重力的作用；而在下沉气流中，他们停止拍打翅，保持下沉。

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。

These downdrafts steadily increases in size and strength crowding the updrafts and growing more violent as they descend to the ground with their thundering downpour .

那些下沉气流在大小和力量方面稳定增长，与上升气流集聚之后当他们会更加猛烈地增长，既而伴随着雷震雨下降到地面。

The weaker and more rare the lift, the more you need other gliders around to cover more area to find thermals.

较弱和更难得的上升气流，您需要更多的其他滑翔翼/飞行伞在周遭，以涵盖寻找热气流的更多区域。

The result showed that the strong storm followed by mesoscale squall line was primary cause of strong sandstorm producing, steps and ladders short wave trough of 500 hPa was great criterion triggering system for the mesoscale squall line producing, the essential dynamic condition was provided by distortion field and the mesoscale low pressure of 700 hPa for the strong sandstorm forming and maintaining in mid-west of Hexi Corridor, the deep vertical circulation development condition was basic power that urged squall line to occur and sand dust to curl up, which was provided for the deep convection development by superimposition of lifting movement before ground cold front and ascendant current of secondary circulation in upper air jet entrance region, temperature and the barometric gradient around the cold front was enlarged by enhancement of ground thermal low and temperature diurnalvariation of afternoon, by which essential thermal energy unstable condition was provided for the gale and strong sandstorm eruption, the strong sandstorm appeared in downstream of -200 m^2s^(-2) center of vertical helicity, the vertical helicity had good instruction significance for development of squall line and landing region of sandstorm, the mesoscale squall line occurred in unstable stratification, basic condition of potential energy transforming as kinetic energy was provided by strong unstable stratification for the strong sandstorm forming and developing.

结果表明：中尺度飑线所伴随的强风暴是产生强沙尘暴的主要原因；500 hPa阶梯短波槽是中尺度飑线产生的大尺度触发系统，河西走廊中西部700 hp变形场、中尺度低压为强沙尘暴形成和维持提供了必要的动力条件；地面冷锋前上升运动与高空急流入口区次级环流的上升气流的叠加，为深对流发展提供了深厚的垂直环流发展条件，是促使飑线发生和沙尘卷起的基本动力；地面热低压的加强和午后气温的日变化加大了冷锋前后的温度和气压梯度，为大风、强沙尘暴爆发提供了必要的热力不稳定条件；强沙尘暴出现在垂直螺旋度为－200平方公尺/s^2中心的下游，垂直螺旋度对飑线的发展和沙尘暴的落区具有较好的指示意义；中尺度飑线发生在不稳定层结内，较强的不稳定层结为强沙尘暴形成、发展提供了位能转化为动能的基本条件。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。