四线的

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。

Then, line the bottom of four demitasse cups with 1 teaspoon each of chocolate sauce before adding the teaspoon cinnamon to the coffee.

然后四线demitasse杯底部各1茶匙巧克力酱前加茶匙肉桂的咖啡。

Deduced by the ip iq detection method,it directly applied to asymmetric three phase four wire system,no need to remove zero sequence component,it is correctly detects the fundamental zero-sequence,negative sequence and harmonic component,the simulation results show that its conclusions are correct.

经推导，ip iq 检测法可直接应用于不对称三相四线制系统中，无需先剔除零序分量，同样能够正确检测出基波零序、负序及谐波分量，仿真结果证明其结论的正确性。

Line 4 of 8 from the MTR station is only 500 metres Huidong, 115, 718, Kangen lane, 312 direct district.

距地铁复八线的四惠东站也不过500米，115、718、康恩专线、312直达小区。

Transformer to the neutral line of the system.

至三相四线制系统中安装三极空气断路时，请选择合适的

These models are the dipole field with the axis to the sun and the quadrupole field model.

这两种模型就是偶极矩平行于日地连线的赤道偶极子场模型和四极子场模型。

The effect of various heavy oil fractions on the colloidal stability of residue system was studied by mass fraction normalized conductivity method.

向绥中36-1常压渣油中分别加入催化裂化油浆和减四线抽出油，研究了其对渣油胶体稳定性的影响。

Chapter IV is the interior wiring of the basic requirements and methods.

第四章是室内配线的基本要求及方法。

That's the reason we're still fighting on all four fronts.

这就是我们能四线作战的原因。

Jtclwkzypj1207 Method 2: Take supine position, hands thumb massage from the Yin-Tang (2 brow the mid-point connections) First Star (former hair straight up an inch at the middle), repeated 2 minutes; then save the thumb rubbing bamboo, Fish waist, string and wind music escort in guangzhou space, the sun, sleep (Yifeng Point and Wind Point connection pool mid-point) 3 minutes; Since then, in order to massage his forehead with both hands thenar 2 minutes, light Mount eyeball 2 minutes; then use the thumb rubbing Baihui (post-hairline straight 7-inch locations), God Cong four points (Baihui around, next to the opening of an inch Office) 3 minutes.

方法二：取仰卧位，双手拇指按摩从印堂至上星(前发际正中直上1寸处)，反复2分钟；再用拇指揉攒竹、鱼腰、丝竹空，太阳、安眠(翳风穴与风池穴连线的中点)3分钟；此后，以双手大鱼际肌按摩前额2分钟，轻摩眼球2分钟；然后用拇指揉百会(后发际直上7寸处)、神聪四穴(百会穴前后左右旁开各1寸处)3分钟。

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。

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。