风口

At last the paper realized the advantages and disadvantages of passive solar building and adnvanced some suggestions in future research. From another point, the paper logged the process of the building of the experimental equipment and the mounting of the measurement equipments that accumulated some operating experimence.Carrying experiments, calculating and analyzing the experimental data for more than 2 years, the paper gained some constructive conclusions. In winter the indoor air temperature and RH are lower than comfort criteria, but people feels very comfortable in the passive solar house. The thermo-circulation formed by Trombe wall play an important role in improving indoor air temperature and RH. Based on the analogy analysis theory, the natural convection heat transfer in the air gap can be treated as superposition of two natural convection heat transfer processes occurring over isolated isothermal vertical flat plate, in this case namely the massive wall and glazing. Two empirical formulas for Q and Nu are obtained. The investigation shows that the optimal time to open the damper should comply with the period that the thermo-circulation happens which can be controlled by thermal response characteristics of Trombe wall surface temperature and air temperature in the air gap.

经过两年多的实测和计算，根据传热学、流体力学、统计学等学科的基础理论，对大量数据进行整理归类、分析讨论，主要得到如下结论：(1)冬季，含有特朗贝墙体的被动式太阳房室内热湿环境较舒适性标准偏低，但人体感觉比较舒适，特朗贝墙体形成的热循环通风在调节室内温度和相对湿度方面起到很大的作用；(2)特朗贝墙体空气间层自然对流可以看作是两个等温独立大平板的自然对流换热过程的叠加，通过与大平板自然对流理论类比获得了计算热循环过程中对流换热量的经验公式；(3)特朗贝墙体通风口的启闭可以根据玻璃幕墙内壁面温度、蓄热墙体外壁面温度和空气间层进出口空气温度之间的关系来进行控制，从而有效地阻挡冬季冷循环的发生；(4)夏季，如没有有效的通风降温措施，被动式太阳房内会产生明显的过热。

There are profound study on the internal heat and mass transfer of cooling tower in unwindy weather at present.

在目前冷却塔数值研究的基础上，本文以逆流湿式自然通风冷却塔为研究对象，建立冷却塔内外空气流动和传热传质的数学和物理模型，并运用数值计算方法对冷却塔进风口附近的流场进行了数值模拟。

In addition, the definition of characteristic air velocity is presented and the relationship between meteorological parameter and air inlet flow field at unwindy weather are discussed.

除了在180°的背风面区域附近，进风口各点的进风速度与侧风速度为二次多项式关系；而在180°的背风面区域附近，进风速度与侧风速度为Gauss分布关系。

At a certain point in the suction cycle after the vacuum inlet, a defined amount of fresh air is let into the pump through the second suction opening from the atmosphere, thus allowing the pump not only to produce a good vacuum, but simultaneously produce a very high blast air flow even after the vacuum has been generated.

复合泵额外配有一个被称为&二次吸收&的风口。在真空进程之后的吸气循环一个特定点上，确定数量的新气体通过二次吸收口从大气进入泵体，从而使泵不仅产生良好的真空，而且在真空形成的同时产生压力很高的吹送气流。

The vent of air-conditioner is a wooden product,so the condensation there in long term easily blackens the wood and makes it moldy,that frequently needs maintenance and the cost will be higher.1200 kwh will be a waste the balcony door of 400 rooms in a hotel open averagely for half an hour,and the waste per month is 36,000 kWh.

因空调风口是木制品，长期有冷凝水容易使木头发黑及发霉。造成经常维修和成本上升。一家酒店400间房平均每天只打开阳台门半个小时即浪费1200度电，一个月将浪费36000度电。

The side vent cowls are tailored to the needs and speeds of the street.

侧面通风口而定制，这些需要和街道的速度烟囱罩。

Being downwind from a volcano is to be avoided, where ash fall is heaviest, disbursing into the atmosphere thereafter.

要避免在火山的下风口，因为此处的火山沉降物是最多的，之后还会飘进地球大气层。

They often spew water from their funnels when hauled aboard.

它们经常吐水从它们的通风口当被拖上船时。

Lavatories are located in the front of the cabin and in the rear.Please do not smoke in the lavatories.

在您座位上方还有空气调节设备，您如果需要新鲜空气，请转动通风口。

According to the character of the temperature,humidity and the velocity of the wind measurement in the VAV air conditioning system,the digitized detecting technology,frequency converter and the software of Kingview are used in this ***, thus predigesting the anterior circuit,increasing the ability of this system to measure and control effectively and offering a research platform for the design of multi-channel.

本文在变风量空调系统的要求下，根据变风量空调系统对温度、湿度和风速的要求，采用数字化丈量技术与变频器、组态软件相结合，这样简化了前真个电路设计，可以改善系统的测控能力，为多种风口形式设计提供了平台。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。