数一数
- 与 数一数 相关的网络例句 [注:此内容来源于网络,仅供参考]
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From the detailed simulation results and analysis,for the emulational frame based on minimum zone set,the route discovery mechanism of DSR is independent of nodes mobility,every once,the source node acquires a route to a target node which its relative position is alterant,the routing time is steady but not be effected by nodes mobility,the conclusions are obvious helpful for reducing route tip and increasing routing efficiency.
通过对选取总路由流量,路由平均跳数、平均路由发现时间的实验数据分析发现,对于基于最小区域集的仿真框架,DSR的路由发现机制并不受节点移动性的影响,每次源节点获得一条到达相对位置已改变目的节点的新的路由的时间并不受节点的移动性影响而趋于稳定,可明显减少路由跳数,增加路由计算效率。
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The number but section is all the rage the world the number anagram topic game.
数独是一款风靡世界的数字谜题游戏。
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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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Four is the anteumber of five, eleven is the antenumber of twelve.
四是五的前列数,十一是十二的前列数。
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The discussion is based on some property of arithmetic function.
为了判断整数是否为亲和数,在讨论数论函数性质的基础上,找到一种验证一个整数是否是亲和数的方法,从而给出了f=x2x+1不与任何正整数构成亲和数的结论,这里x为偶数,即关于y的方程σf(x=σ=f+y不存在正整数解。
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This Standard allows one's complement, two's complement, or sign-magnitude number representations and arithmetic.
这个标准允许一补数、二补数或是符号式的量值和算术。
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Like a vector, an array holds a collection of objects of some type.
与 vector 类型相似,数组也可以保存某种类型的一组对象;而它们的区别在于,数组的长度是固定的。
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An auxiliary power motor with improved structure includes wheel shell, rotor ring, stator plate, central wheel axle and control circuit.
一种改良结构的辅助动力马达,包括轮壳、转子环、定子盘、中心轮轴及一控制电路,转子环的内环面埋设磁铁,定子盘周围固设环形矽钢片,其外环面具有多个T形齿牙,其齿数为非转子环磁铁数的公倍数,矽钢片设有三相星形线圈绕组,且于定子盘电机最佳启动角度处设有霍耳元件组;借此将定子盘固设于中心轮轴,令轮壳夹设住转子环并套设于中心轮轴两侧,当转子环旋转时,即可降低磁极间的钝齿转矩,令电动车行进更加顺畅无噪音。
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For example, the stroke count of a character iscalculated algorithmically from actual CDL instructions for writing the character stroke-bystroke;it is not merely a personal impression, or gathered from one of various dictionaries thatof a particular component.
例如。笔画数是按着CDL一笔笔写出汉字的指示信息通过算法计算出来的,而不仅仅是根据个人印象或是从各种具体部件的笔画数互有出入(甚至各自有各自的一套原则)的字典中照抄来的。
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Nicholas Tse for Mandarin recently released a new album,"Finally", a helicopter hovered in the air for a few weeks before landing on the aircraft carrier, one step over the door was surrounded by bodyguards and police enters the stage, together with more than 70-year-old father Xie, together严实wearing the Air Force uniform, standing shoulder to shoulder under the hot scorching sun deck with dozens of news media to meet and accept the crazy fans cheering at the scene.
近日谢霆锋为发布国语新专辑《最后》,乘坐的直升机在空中盘旋了数周才降落在航母上,一踏出舱门随即被多名保镖和武警簇拥登场,又联同70多岁的父亲谢贤,一起身穿严实的空军制服,并肩站在烈日下滚烫的甲板上,与数十家媒体的记者见面,接受现场粉丝的疯狂欢呼。
- 推荐网络例句
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。