查询词典 downward ventilation

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。

It was found that the rolling-up vent had a higher ventilation rate (up to 2.32 times) than the continuous roof one, the better ventilation (more than 60% at the wind speed of 3.0 m/s) could be achieved with vents near the ridge of the roof instead of near the gutter, and the obvious reduction (18%-22% at the wind speed of 3.0 m/s) in the rate values when an insect-proof screen was fitted to it, in the case of full opening of the vents.

研究表明，在试验条件下，当通风口完全打开时，卷膜通风系统比天窗开启式具有可高达2.32倍的通风率；在风速为3 m/s时，位于拱顶脊部的通风口比位于拱底部的通风率大60%；在同样条件下，防虫网可把通风率减少18%～22%。

Objective To investigate and dispose high-limit alarming causes of minute ventilation in invasive mechanical ventilation.

目的 阐述有创机械通气分钟通气量高限报警的原因及处理措施。

Objective To investigate and dispose high-limit alarming causes of minute ventilation in invasive mechanical ventilation.

来源：中国论文下载中心 [ 10-01-29 15：02：00 ] 作者：槐永军，张俊丽编辑：studa20 目的阐述有创机械通气分钟通气量高限报警的原因及处理措施。

I plant mainly produces marine distress signals, life jackets and circle, rope-throwing equipment, spare parts liferaft boats, emergency escape breathing apparatus, fire-pressure air ventilation, air bubble gun, fire insulation clothes and the use of water cannon fire, Marine Fire equipment such as five series over 100 varieties of products, which were positive pressure air ventilation, fire insulation clothes, water Paomeimiehuoqi, diving equipment, and other products through seven provincial identification, more than 10 times the municipal science and technology advancement awards Huosheng , products exported the United States, Japan, South Korea, Singapore, Malaysia, Vietnam, the United Kingdom, Hong Kong, Taiwan and other countries and regions.

我厂主要生产船用求救信号、救生衣和圈、抛绳设备、救生筏艇备品备件、紧急逃生呼吸器、正压式消防空气呼吸器、空气泡沫枪、防火隔热服、多用消防水枪、船用消防装备等五大系列100多个品种的产品，先后有正压式空气呼吸器、防火隔热服、清水泡沫灭火器、潜水装具等七个产品通过省级鉴定，十多次获省市级科技进步奖，产品远销美国、日本、韩国、新加坡、马来西亚、越南、英国、香港、台湾等国家和地区。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。