查询词典 air pressure

The principle of the design of the duct system for the exhaustion of lacol air and a method of determining calculated static pressure and calculating residuary static pressure are introduced.

介绍了局部排风管道系统的设计原理以及计算静压和剩余静压的计算方法，最后给出了根据设计原理求解管道直径的方法和工程实例。

Company main equipment: 160 ton friction press, thread rolling machine CW6140A, CD6140A, the C630 lathe, WQ8260, crankshaft grinding T716, the vertical boring machine, the hydraulic pressure test platform, hit press M4214, the vertical hydraulic pressure grinder, the drilling machine, the saw village 60 tons presses, 5 tons overhead traveling cranes two, the GB4-1 sail loom, GB4035 metal gig saw ZPH-501 the intermediate frequency electric radiator DS-500 electric welding machine, the DSI-300 electric welding machine, the air compressor, the paper-cutting machine, the heat bonding machine, the stamping press, the laminating machine.

公司主要设备：160吨摩擦压力机、滚丝机CW6140A、CD6140A、C630车床、WQ8260、曲轴磨床T716、立式镗床、液压试验台、打压机M4214、立式液压研磨机、钻床、锯庄60吨压力机、5吨天车两部、GB4-1帆布机、GB4035金属带锯床ZPH-501型中频电热器DS-500电焊机、DSI-300电焊机、空气压缩机、裁纸机、热合机、烫金机、覆膜机。

This paper propounds an improved kinetic model of monthly potential evapotranspiration ETi:ETi=where i is a number of month, Pi the monthly mean atmospheric pressure,ti the monthly mean air temperature, di the number of days in a month,Ui the monthly mean wind velocity measured at height 10-12m, woi the saturated water vapour pressure at ti,and hi the monthly mean relative humidity.

本文提出了关于月可能蒸散量ETi动力学模型的改进形式：式中，i是月份的编号，Pi是月平均气压，ti是月平均气温，di是月的天数，Ui是在10─12m高度处观测的月平均风速，woi是在温度为ti时的饱和水汽压，而hi是月平均相对湿度。

Common type oil mist device in a state of fuel inlet, when plug 10 as long as the screw pine oil, the oil cup on the cavity c they pass the atmosphere, at the same time, enter the incoming compressed air will be cut-off valve spool 2 pressure in the cut-off valve seat 4 on, cut off the passage of compressed air into the c-cavity.

普通型油雾器能在进气状态下加油，这时只要拧松油塞10后，油杯上腔c便通大气，同时，输入进来的压缩空气将截止阀阀芯2压在截止阀座4上，切断压缩空气进入c腔的通道。

The paper fristly analyzed the reason of mine air reversing in Liangbei coal mine of Xinlong Coal Industry Corporation,which based on mensuration of mine ventilation resistance and spontaneousness wind pressure,and then the measures of preventing the air reversing was put forward.

在对新龙矿业集团公司梁北煤矿的矿井通风阻力测定和自然风压测量的基础上，找出梁北煤矿2007年1月气温突降后所引起的主井风流反向的主要原因，推导出导致风流反向的基本条件，提出在副井至-550 m运输石门之间增加调节设施以增大副井的风阻、增大主要通风机机械风压、在主井下安装压风机人为增大主井的机械风压、减少主井附近热源、对主井的风流进行降温处理和对副井的进风流进行预热以减少主副井之间的风流平均密度差等防止风流反向的控制措施，从而使主井恢复正常的进风状态，消除了矿井安全生产的严重隐患

It is found that the impact pressure may be maximal when the ratio of initial air volume, under standard atmospheric pressure, to total volume in pipeline reaches a certain value.

试验结果表明，水流冲击截留气团的最大压力与截团在一个大气压下的初始体积占管道总体积的比例多少有关。

In this year's Beijing International Machine Tool Show (2005 CMIT), the Tianjin-or gold at the full range of products, including air preparation components: regulator, filter, lubrication, drainage, pressure gauges; valve categories: Electromagnetic valve, pipe valve, pneumatic valve, mechanical valve, the valve manually, foot valve; cylinder categories: standard atmospheric pressure bars, mini round-cylinder, micro-cylinder, rotating cylinder, manipulator, welding tanks, cylinder block, a rule Cylinder, no-cylinder, guided-bars and all kinds of buffers, the appearance of refined products, a series of rich and comprehensive feature allows visitors not only praise, so that customers have a better choice.

在今年的北京国际机床展（2005CMIT）上，天津罗升展出了金器全系列产品，包括气源处理组件：调压器、过滤器、润滑器、排水器、压力表；阀类：电磁阀、管路阀、气动阀、机械阀、手动阀、脚踏阀；缸类：标准气压杠、迷你圆型缸、微型缸、旋转缸、机械手、焊接缸、阻挡缸、治具缸、无杆缸、导杆杠及各种缓冲器等，产品精致的外观、丰富的系列、全面的功能让参观者赞叹不止，让客户有了更好的选择。

Hence, for improving the uniformityof air supply and the performance of the duct, it is of great importance to studythe rules of resistance distribution in static pressure air supply duct.

研究静压式空调送风道内的阻力分布规律对提高送风道的送风均匀性，改善送风道的性能有十分重要的意义和价值。

The previous literatures indicate the inversion temperature exists under superheated steam drying with an atmospheric pressure, when the temperature of superheated steam is higher than the point of inversion temperature, the drying rate of superheated steam is faster than that of air drying, but if the temperature of superheated steam is lower than the point of inversion temperature, the drying rate of superheated steam is slower than that of air drying.

已有的研究表明，在过热蒸汽干燥时存在一个温度点，称为"逆转温度"，当过热蒸汽的温度高于"逆转温度"的温度时，过热蒸汽干燥速率比空气要快，低于逆转温度时则正好相反。由于木材浮压干燥的工业化应用是在负压区实现的，因此对真空状态下过热蒸汽干燥是否也存在"逆转温度"问题的研究非常重要。

Contract:This article disausses the principal of main steam temperature control system according the problems in running,including the unreasonable main steam pressure set point volue,hot air injection flow is not acciurate,Charge of steam temperature has the big delay and the common PID can′t satisfy the regulate′s demandthen take the according measures,adopt smith predictor,change to ABB intelligent positioner,add the hot air injection antiblock device,test the main steam temperature automation and optimization the specificator.

中国国电集团公司菏泽发电厂热工，山东摘要：本文论述汽温控制系统组成原理，针对运行中发现的问题，包括一次风母管压力自动设定值设计不合理，导致主汽温度和再热汽温度变化幅度加大，底部注入风量和汽温参数测量不准确，汽温变化迟延大，常规PID满足不了调节要求，采取了相应措施，改用史密斯预测器，更换为ABB定位器，增加底部注入风量等测点防堵装置，并对主汽温自动进行试验和参数优化。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。