based on the statistic independent property of the effects of rough surface and atmospheric turbulence on a propagation laser beam, a formulation for the probability density function of the unwrapped phase of a elliptic gaussian speckle field that propagates through clear air turbulence is developed.

there are many different kinds of turbulence, with the most problematic to predict and to avoid being clear air turbulence ( which is very difficult to detect using conventional radar).

乱流有很多种，其中晴空乱流最难预测与回避，常规雷达很难侦测。

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the beginning researches and manufacture of airborne laser radar detecting clear air turbulence system is to adapt to the demand of the modern aviation development.

机载激光雷达晴空湍流探测告警系统正是适应现代航空发展的需要而开始研制的。

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thus, it is a hotspot to detect clear air turbulence with lidar.

因而通过激光测风雷达探测晴空湍流是国际上研究的热点。

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the second part of this paper is clear air turbulence detection theories foundation.

第二部分为晴空湍流探测理论基础。

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in addition, this simplified equation was tested using the environmental technical application ( eta) mode and the data of 100 cases of clear air turbulence ( cat) in flight.

根据收集到的100例飞行中晴空颠簸的实际资料，利用环境技术应用（ETA）模式对该简化方程进行了检验。

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the relationships between richardson number and clear air turbulence

理查逊数和晴空颠簸的关系

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our people don't know their exact dates of birth-my mother, for example, does not know when she was born.

我们一般不会记得自己确切的生日，比如我母亲就不知道她是何时出生的。

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examples for finding out the dates of birth and death of historical figures

历史人物生卒年代推求方法举例

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mr kaplan says companies "and government agencies" dependence on this form of identification and other easily discoverable identifiers such as names, addresses and dates of birth, is archaic and no longer secure.

卡普兰说，企业及政府机构对这种身份识别形式以及其他容易被发现的识别信息（如名字、地址和出生日期）的依赖是过时的、不安全的。

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the couple listed their address as windsor and maidenhead alongside their dates of birth and a description of their occupations, musician and film-maker.

埃尔顿爵士与弗尼什登记了住址，出生日期和职业等情况。他们分别住在温莎与梅登海德镇，是音乐家与电影制片人。

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in the 1930s the us needed expansionary policies to counter the depression but worried that moving too aggressively would demoralise markets and destabilise the dollar.

上世纪30年代，美国需要扩张性政策来抵御萧条，但又担心过度的举措会挫伤市场，并动摇美元汇率。

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according to data compiled by bloomberg, hedge funds were up an average of 2% on the year, just barely offering the coupon rate of a risk-free 10-year treasury note.

彭博收集的数据显示，对冲基金平均同比上涨了2%，其回报率也就勉强赶上无风险10年期美国国债的票面利率。

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after falling as low as 1.61% in the spring, the yield on the 10-year treasury note surged past 3% at the end of 2013 to its highest level since mid-2011.

10年期美国国债收益率在去年春天一度跌至1.61%低点，但在2013年底时突破了3%，创下2011年中以来的最高水平。

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since late april, the yield on the 10-year treasury note has risen from below 3 per cent and peaked at 3.76 per cent last week, its highest level since november.

自4月末以来，10年期美国国债收益率从不到3%，升至上周的最高点3.76%为去年11月以来的最高水平。

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in contrast with past periods of turbulence, this one has not so far spurred a fierce rally in the 10-year treasury note, a safe-haven investment.

与之前的震荡行情相反，本次震荡尚未导致避险投资10年期国债的激烈反弹。

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maybe you have some extra cash laying around with which you can buy a long-term treasury note that will keep issuing you a check every six months.

手头上有闲钱，你可以买买长期国债，这样每六个月你就会有一笔收入了。

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bond yields were also higher, led by the yield on the two-year treasury note, which rose 3 basis points to 3.37 per cent.

债券收益率也出现升高。其中二年期美国国债收益率，上升3个基点，达3.37%。

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as bond prices rose, the yield on the 10-year treasury note fell to 2.04 percent on monday.

随着国债价格的上涨，10年期国债收益率周一下跌到2.04%。

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the yield on the ten-year treasury note was down 3 basis points at 2.26 per cent.

十年期国债收益率下降3个基点，跌至2.26%。

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alice and kitty usually go to school together.

艾丽丝和基蒂通常一起去学校。

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