- 更多网络例句与LES相关的网络例句 [注：此内容来源于网络，仅供参考]
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The main work and the originality points of this dissertation could be concluded as the following parts:(1) To analyze systematically the mathematical model of LES of air flow in great space, under the case of isothermal and non-isothermal, as well as the combined action of buoyancy and strain. Some basic problems are studied about the LES application into airflow simulation of great space, such as boundary conditions, spatial difference scheme and time advancing scheme, time step etc., which creates the basis for the LES application to indoor airflow simulation.(2) Both the instantaneous and time averaged flow field of great space with multiple jets under isothermal and non-isothermal cases are explored with large eddy simulation method, and also discussed the dynamic characteristics and the law of fluidflow in the great space.(3) Based on the results of LES of the great space and the Fanger thermal comfort indexes, it is brought forward the concept of the series of dynamic thermal comfort evaluating indexes, which could be divided into thermal comfort index with time averaged properties PD, PPD, PMV, thermal comfort index with instantaneous properties IPD, IPPD, IPMV, and time averaged thermal comfort indexes TAPD, TAPPD, TAPMV, and transient situations time averaged thermal comfort indexes TTAPD, TTAPPD, TTAPMV. The differences among them and the calculation methods are discussed, and the four kinds of indexes are calculated with the thermal comfort index PD as an example.(4) Based on the LES results it is discussed the hot air stratification phenomena in air-conditioned buildings in the case with air supply and return registers on the ceiling and the case on the sidewall. The fundamentals of the hot air stratification are studied and the relations of estimating hot air stratification are brought forward.(5) With the advanced apparatus such as hot wire film anemometer IFA300 and laser particle field anemoscope, corresponding model test and site measurements have been done, which are compared with the simulation results and LES is proved a very promising method in air flow simulation indoor.
本文主要工作既创新点体现在以下几个方面：(1)系统分析了等温、非等温和考虑剪切力与浮升力综合作用的高大空间大涡模拟数学模型，并研究了高大空间大涡模拟在室内气流仿真应用中的一些基本问题，如边界条件、空间离散格式和时间推进格式、时间步长选择等问题，为大涡模拟在室内气流计算中的广泛应用打下了基础；(2)首次用大涡模拟方法研究了高雷诺数下高大空间多射流在等温、非等温情况下的瞬时流场和时均流场分布，并探讨了多射流流场的动态特性和流动规律；(3)基于大涡模拟的动态仿真结果和Fanger的热舒适指标，首次系统地提出了动态热舒适评价指标体系的概念：即基于时间平均参数的热舒适指标PD、PPD、PMV；基于瞬时参数的瞬时热指标IPD、IPPD、IPMV；基于时间平均热舒适指标TAPD、TAPPD、TAPMV；以及沿行动迹线的时间平均热舒适指标TTAPD、TTAPPD、TTAPMV，并分析了四类热舒适指标的差异性和计算方法，还以PD值为例对四类指标分别进行了计算；(4)基于数十种工况下空调房间大涡模拟的结果，研究了空调建筑上送上回和侧送侧回两种情况下热分层现象，并探讨了热分层的基本规律，首次提出了避免热分层现象的判断公式；(5)在暖通空调领域，首次使用IFA300热线风速仪、激光粒子速度场仪等先进设备，完成了与大涡模拟相对应的模型试验，并把实测结果与仿真结果进行了对比，说明LES在室内气流仿真方面是一种很有前景的方法。
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Introduced in '55 as an affordable alternative to the Les Paul's carved-top luxury, the Gibson Les Paul Junior Electric Guitar - a one-pickup, flattop cruisin' machine - caught on quickly and climbed right into guitar legend.
简介：介绍在'55作为对Les保罗的雕刻上面豪华的一个付得起的选择，-一提取，平顶cruisin'机器-迅速风行和爬的Gibson Les保罗小辈电吉他入吉他传奇。
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L-arginine decreased LES tension and L-NAME antagonised its effect in saline control, but no effects on LES strips in BAC-treated dogs.
加入卜精氨酸可使生理盐水组LES 肌条的肌张力降低，L－NAME有明显的桔抗作用，但对BAC处理犬LES肌张力无影响。
- 更多网络解释与LES相关的网络解释 [注：此内容来源于网络，仅供参考]
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Les septieme jour,pour se reposer, il fit les nuages：第七天是用来休息的,主造了云
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Les caresses les plus pures：是那温柔纯洁的爱抚
Les mots, les mots tendres qu'on murmure 诗,是那温柔的窃窃情话 | Les caresses les plus pures 是那温柔纯洁的爱抚 | Les serments au fond des bois 是那深林中的誓言
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Les strass et les paillettes les fans et les groupies：球衣,闪光片,球迷,发烧友
J't'oublierai jamais malgre le succes 尽管取得了成功,... | Les strass et les paillettes les fans et les groupies 球衣,闪光片,球迷,发烧友 | Tu sais nos souv'nirs j'les garde en memoire 你知道我已经把我们...