查询词典 ventilation

The plant ventilation status under different conditions is calculated with steady k-ε turbulence model. Results show that different surface has a different impact on natural ventilation. The ground surface constructed with some good heat-absorbing materials will have an enhanced surface effect. The surface effect is fully put into effect at the maximum outdoor windspeed of 1.5m/s.

在稳态条件下，采用k-ε湍流模型，计算了不同工况下的厂房通风状况，结果表明，不同的地表对自然通风的影响是不同的，厂房内的地面采用吸热性能好的材料构筑，会增强地表效应；地表效应得以充分体现的最大室外风速为1.5m/s。

Control of pressure differential with ventilation rate has been commonly used for the ventilation system of hospital isolation rooms.

负压隔离病房通风系统，通常采用换气率配合压差控制。

Presents the characteristics of recreational natatoria, discusses the modes of HVAC systems, heat and moisture load calculation, ventilation rate determination and winter ventilation operation adjustment, and provides two calculation methods of outdoor humidity ratio in transition seasons.

介绍了娱乐性游泳馆的特点，探讨了暖通空调系统形式、热湿负荷计算、通风量确定、冬季通风运行调节等问题，提出了两种过渡季室外含湿量计算方法。

Operations, should be timely to take away the harmful welding gas, poor ventilation in the cabin or container operations, should be installed ventilation equipment.

作业时，应及时排走焊接中产生的有害气体，在通风不良的舱室或容器内作业时，应安装通风设备。

Based on the model calculation,an FAPP ventilation system was madein Beijing Poultry Breeding Company.Through running test and a series ofphysical and chemical characteristic measurement,the distribution of flowspeed in length,and breadth was given.The average temperatureand rel-ative humidity,the amplitude of T and RH per day of 30 days in winter,and instantaneous T and RH in 24 hours wre measured in FAPP house,com-paring house and outside,the result shew that FAPP ventilation system wassuperior to comparing house.The dust concentration and microrganism con-tent were also measured in the rearing piriod of poultry,the value in FAPPhouse was junior to comparing house.

在模拟结果的基础上，设计了一套FAPP通风系统并在北京市种禽公司原种后备场种雏舍进行了实际运行试验和一系列的理化特性参数的测试，试验给出的正压管道式送风舍纵轴方向及横截面上气流速度的分布规律与模拟结果相吻合；通过对FAPP舍、对照舍及舍外冬季30天的逐日平均温湿度、温湿度振幅以及24小时瞬时温湿度的测试分析，显示了FAPP通风系统在冬季通风中明显优于负压通风系统；在雏鸡全周期的饲养过程中还对舍内粉尘与微生物的含量进行了测试，FAPP舍的值明显低于对照舍，这一结果为FAPP通风系统的推广应用提供了实验依据。

To establish an effective ventilation mode for fire fighting in the Qinling road tunnel, an experiment is carried out to study the temperature distribution and smoke propagation in the ventilation duct and shaft of the tunnel in case of fire..

为了建立火灾工况下有效的竖井通风模式，通过大比例火灾模型试验，对不同通风模式下，主隧道、风道及竖井内温度场的传播分布、烟流蔓延扩散规律进行了研究。

In order to obtain blended cigarette products with different tar deliveries,the relationship among the ventilation rates of cigarette,tipping paper and cigarette paper was investigated with single-line or two-line online laser perforation,and a mathematical model between the ventilation rate of tipping paper and tar delivery was established.

为了得到不同焦油量的混合型卷烟产品，考察和测试了一排、两排在线激光打孔条件下的卷烟总通风率、接装纸通风率、卷烟纸通风率三者之间的关系，建立了接装纸通风率与焦油之间的数学模型。

No.2 ventilation shaft of Qinling highway tunnel is one of the largest ventilation shafts in the highway tunnel field at home and abroad.

秦岭公路隧道2号通风竖井，为国内乃至世界公路隧道规模最大的竖井工程。

Methods The effect of the two ventilation modes on respiratory mechanical markers including peak inspiratory pressure, mean air way pressure and circulatory index and blood gas parameters were observed and recorded by self-comparison when mechanical ventilation treatment were applied in 22 patients with severe ARF.

22例严重急性呼吸衰竭患者机械通气治疗中采用自身对照方法观察PRVC与VC两种通气模式对呼吸力学指标吸气峰压、气道平均压和循环血气指标的影响。

Ccording to the characters of disasters in gas-logged, inflammable and thick seam of coal face, by analyzing and comparing the advantages and disadvantages of the current ventilation method s, a new ventilation method with technique, economy and safety as a whole is brought forward.

针对高瓦期、易自燃厚煤层中高产高效工作面的灾害特征，通过分析比较现有的几种通风方式的优缺点，提出了一种集技术、效益、安全一全化的新型通风方式。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。