查询词典 air pressure

According to the request for testing, the development of CAT test-bed for high-low pressure relay of Train Air Condition Unit is presented, including the theory and method of testing, the composition of hydraulic system and CAT system, the design of hardware and software ,the error analysis of testing system and so on .

本文首先叙述了计算机辅助测试技术的发展概况及压力继电器试验台CAT 的关键技术，接着介绍了高低压压力继电器基本结构及工作原理，并针对测试要求完成试验台总体方案设计。

As the thermonuclear pressure wave spread and butted against the thermosphere, it heated the air orange, compressed it, until it touched the ground and scorched a quarter of the world.

当高热核冲击扩散压迫着热气层，把空气加热成桔黄色，压缩它，直到它到达地面烧焦了四分之一的星球。

The result showed that the strong storm followed by mesoscale squall line was primary cause of strong sandstorm producing, steps and ladders short wave trough of 500 hPa was great criterion triggering system for the mesoscale squall line producing, the essential dynamic condition was provided by distortion field and the mesoscale low pressure of 700 hPa for the strong sandstorm forming and maintaining in mid-west of Hexi Corridor, the deep vertical circulation development condition was basic power that urged squall line to occur and sand dust to curl up, which was provided for the deep convection development by superimposition of lifting movement before ground cold front and ascendant current of secondary circulation in upper air jet entrance region, temperature and the barometric gradient around the cold front was enlarged by enhancement of ground thermal low and temperature diurnalvariation of afternoon, by which essential thermal energy unstable condition was provided for the gale and strong sandstorm eruption, the strong sandstorm appeared in downstream of -200 m^2s^(-2) center of vertical helicity, the vertical helicity had good instruction significance for development of squall line and landing region of sandstorm, the mesoscale squall line occurred in unstable stratification, basic condition of potential energy transforming as kinetic energy was provided by strong unstable stratification for the strong sandstorm forming and developing.

结果表明：中尺度飑线所伴随的强风暴是产生强沙尘暴的主要原因；500 hPa阶梯短波槽是中尺度飑线产生的大尺度触发系统，河西走廊中西部700 hp变形场、中尺度低压为强沙尘暴形成和维持提供了必要的动力条件；地面冷锋前上升运动与高空急流入口区次级环流的上升气流的叠加，为深对流发展提供了深厚的垂直环流发展条件，是促使飑线发生和沙尘卷起的基本动力；地面热低压的加强和午后气温的日变化加大了冷锋前后的温度和气压梯度，为大风、强沙尘暴爆发提供了必要的热力不稳定条件；强沙尘暴出现在垂直螺旋度为－200平方公尺/s^2中心的下游，垂直螺旋度对飑线的发展和沙尘暴的落区具有较好的指示意义；中尺度飑线发生在不稳定层结内，较强的不稳定层结为强沙尘暴形成、发展提供了位能转化为动能的基本条件。

In order to develop and modify Gregory scheme for cumulus convective parameterization,we make the improvement as follows:(1) The large-scale moisture convergence is taken into account and the organized inflow,which occurs in the area of large-scale moisture convergence and is directly proportional to it, is added to turbulent airflow.(2) The influence on saturation vapor pressure exerted by supercooled water is taken into account and the initial mass flux is adjusted. Based on diagnosis of the air heating and moistening, the downdraft airflow is adjusted.(3) Based on the character of our country heavy rainfall,which usually occurs in the mixed cloud consisted of stratocumulus and cumulus, the process of excessive convection is restrained by organized outflow in the top of cloud and improving downdraft current and by reducing the evaporation of rainfall and release of latent heat.

为了改进和发展Gregory积云参数化方案，(1)考虑了大尺度水汽辐合对积云对流的影响，即在混合卷入中加入有组织的卷入，让有组织的卷入存在于有大尺度水汽辐合的层次上，并且与大尺度水汽辐合直接成比例；(2)考虑了过冷水存在对饱和比湿的影响，调整了初始的质量通量，并且根据对大气加热加湿的诊断，调整了大气向下拖曳的强度；(3)根据我国降水多由层状云和嵌入其中的对流云混合产生的这一特点，对于过强对流过程进行抑制，在云顶加入有组织的卷出，同时加大向下拖曳的强度，减少蒸发以降低潜热的释放，抑制过强对流的发生。

PCDSG displays basic observational data at Wushan station of Guangzhou,four stations nearly,Qingyuan rawinsonde station and Hengshan station.Time series curves of pressure,temperature,humidity and upper air physical values are also included.PCDSG has been used in routine service and appeared as a valuable tool for short - term weather forcast in Guangzhou.

系统可实时显示广州五山站、四个县级市、清远探空站、衡山站的基本资料，显示气压、温度、湿度等观测要素或清运探空站物理量的时间演变曲线。

It may be used to measure the air tempe-rature、 pressure altitude、relative humidity and airspeed.

在人工降水、云物理研究和大气探测中可作为一种基本测量手段。

With the increase of altitude,atmospheric pressure decreases,which leads to a reduction of the air amount inhaled into the cylinder of diesel engines.

随着海拔的增加，大气压力减小，导致吸入柴油机气缸内的空气量减少。

Ingersoll-Rand, as one of the largest professional manufacture of air compressor, has 130 years compressor manufacture experience and advanced technology. The production has the feature of steady pressure, oil free, low power consume, high efficiency and low noise. Ingersoll-Rand is the worldwide leader in package performance and sales, supply perfect compressed gas for industry and customer.

英格索兰公司作为目前世界上最大的空压机专业制造商之一，凭借130年空压机专业制造经验和先进技术，生产的CENTAC机组具有洁净无油、压力稳定、低耗节能、高效低噪的特点，在产品综合性能和销售量等方面长期处于世界领先地位，为工业和用户提供理想的压缩气体。

It has all the safety equipment such as six airbags, stability/traction control, ABS with EBD and BA, plus tyre-pressure monitor, climate air conditioning, power windows and heated mirrors, cruise control, trip computer, remote locking, CD player with Aux input, two 12-volt outlets, 15 inches alloy wheels, engine immobiliser.

Roomster亦非等闲之辈，它享有五星级的安全防撞评分，六安全气袋，安全循迹系统，ABS， EBD 及BA的三重杀车系统，车胎气压计、空调、电动窗及电热侧镜、巡航系统、路程计算电脑、遥控门锁、CD音响包括独立音响输入，电源插口，15吋合金轮圈，引擎防盗。

In the air and gas purification technology separating the field, we have a pressure swing adsorption, freeze-drying, membrane separation technology.

在空气和工艺气体的净化分离领域，我们拥有变压吸附、冷冻干燥、膜分离等技术。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。