如流的
- 与 如流的 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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The pathological formation of patches of gum on certain plants, such as sugar cane and some fruit trees, resulting from attack by insects, microorganisms, or adverse weather conditions.
流胶现象,流胶病某些植物上,如甘蔗及一些果树,形成胶质斑块的病理现象,由病虫害、微生物或恶劣的气候条件侵袭而引起
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Compared with other gas discharge switches, such as gas spark gap, vacuum switch, hydrogen thyratron and ignitron, the parameters of PSS, such as hold-off voltage, peak current, rate of current rise, lifetime, time delay, jitter, have been greatly improved.
伪火花开关与其它气体放电开关如高气压火花间隙、真空开关、氢气闸流管及引燃管等相比,开关的各项参数如耐受电压、峰值电流、电流上升陡度、寿命、时延和抖动都有了较大改善。
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Retaining the main buildings, including a variety of dams, levees and seawall; Sluicing buildings, including a variety of overflow dam, spillway, sluiceway tunnel, flood diversion gates; influent building, also known as the water intake structures, such as the intake gate, deep-intake and pump station; Water buildings, If primer water tunnel, channels and aqueduct; drainage structures, such as the groin, Shun dam, revetments, diversion dike.
保留的主要建筑物,其中包括各种各样的大坝,堤防和海堤;泄水建筑物,其中包括各种各样的溢流大坝,溢洪道,泄洪洞隧道,分洪闸;进水建筑物,也被称为取水口结构,如进水口闸门,深摄入和泵站;水建筑物,如引水隧道,渠道和渡槽;排水结构,如腹股沟,顺坝, revetments ,导流堤。
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From the experimental results, this paper analyzes the relations among the pipe-flow characteristics, solid characteristics, slurry characteristics and transporting method which affected resistance loss in two-phase flow, and does sensitive analysis by using standard regression coefficient method on important factors such as diameter of pipe, specific gravity, concentration and inclined angle to find the degree which have influenced.
根据实验结果,分析了管流特性、物料特性、浆体特性和输送方式对于两相管流阻力损失的影响关系,并首次采用多因素分析法对重要因素,如管径、比重、浓度、倾角等进行了敏感性分析,找出了其影响程度的大小关系。
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Projection Current Detector J01465 is suitable for middle schools and polytechnic schools in the teaching demonstration or experiment with the projector as the current detector to measure small electric current and electric potential difference such as electromagnetic induction, photoemission, thermoelectric induction, and bridge measurement.
J01465投影检流计是适用于中学、中专配合投影仪在进行教学演示或实验时测量直流电路中微小电流和微弱电势差,如电磁感应、光电效应、温差电偶、电桥测量等实验的检流计。
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It is found that the distributed microscopic traffic network simulation methods based on distributed systems require not only the careful discussions on traditional traffic flow theory, such as the driver's uncertain behaviors in selecting the route and changing lane, but also some deep researches on parallel techniques. These key techniques about how to realize parallel and distributed simulations include how to partition the large-scale road network into sub-areas, how to divide the multi-course in dynamic traffic flow operation, how to finish the informational transmission among processors, and how to realize the clock-synchronization among processors etc..
在基于分布式系统的路网交通流并行微观模拟研究中除了需要对传统的交通流理论如驾驶员路径选择、车道变换等微观不确定性行为进行仔细探讨外,还必须对道路网子网的划分方法,交通流动态运行过程中多个进程的划分方式及各进程之间消息传递、各处理器间的时钟同步方式等实现并行的关键技术问题进行深入研究。
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In exceptional circumstances, a dream to the delicious food, will stimulate saliva secretion, saliva secretion increased, it will lead to drooling; improper sleeping positions sometimes lead to the phenomenon of flow of saliva; Some people sleep regularly teeth and stimulate the brain nerve center, to promote saliva secretion, so that flow of saliva; some people love spicy food thing, or, tobacco, liquor, so that night, dry mouth, increased saliva secretion; sleep, mouth breathing tends to dry mouth, thus contributing to an increase in saliva secretion ; In addition, some diseases, such as infectious stomatitis, toothache, mercury, potassium iodide poisoning, but also can stimulate an increase in saliva secretion, causing sleep drool.
是对美食的梦想,会刺激唾液分泌,唾液分泌增加,会导致流口水,有时睡觉姿势不当导致的唾液流现象,有些人睡眠定期牙齿和刺激大脑神经中枢,促进唾液分泌,使唾液流动,有些人喜欢吃辣的东西,或者,烟,酒,所以这天晚上,口干,唾液分泌增加,睡眠,口呼吸往往口干,从而促进在唾液分泌增加,此外,如传染性口腔炎,牙痛,汞,碘化钾中毒的一些疾病,而且还可以刺激唾液分泌增加,造成睡眠流口水。
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I like the white-fringed, in particular, like Zhang Ai-ling white tassels, like the Inter举手投足exciting show people the little woman; like in the eyes of Van Yanagihara white tassel,Is so perfect, gentle and yet strong, mature and yet delicate, yet bold and detailed, smart and yet simple, this kind of a woman described in Zhang Ailing's lives from the general, so that all the"people"wantto have.
我喜欢白流苏,尤其喜欢张爱玲笔下的白流苏,喜欢这个举手投足间流露让人怦然心动的小动作的女人;喜欢在范柳原眼中的白流苏,是那样的完美,温柔又不失坚强,成熟又不失娇弱,果敢又不失细致,聪明又不失单纯,这样的一个女人在张爱玲的笔下由如活了一般,让所有的&人&想要拥有。
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Benadryl also blocks acetylcholine receptors, an action which produces some of the bothersome side effects of the medication (such as dry mouth or difficulty urinating) but also makes the drug useful for other purposes (such as for Parkinson's disease or for relieving a runny nose due to the common cold ).
海拉明还阻止乙酰胆碱受体,这一行动产生对药物(如口干或排尿困难一些麻烦的副作用),而且还使药物用于其他目的(如帕金森氏症或减轻流鼻涕,由于有用对普通感冒)。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。