压差

单片机控制的压差控制仪

The Pressure Difference Controller of Single Chip Microcomputer

乙烯裂解油中芳烃的生产技术系统压差和pH值对催化裂解产物烯烃的影响

Effect of system pressure difference and pH values on the olefine products of catalytic pyrolysis

如果不这样做，巨大的压差会将门窗都关死。到那时你只能等到车里完全充满了水才能逃出来。

If you don 't do this , the pressure differential is too great and it will keep everything shut and you have to wait until your car is completely filled with water in order to get out .

轴流压缩机喉部压差/常数C的确定及应用

Determination and Application of Differential Pressure / Coefficient at Axial Fan Throat

TG为离开滴下带的临界煤气温度，它与高炉热状态有关并影响着高炉内煤气的压差；

TG is the critical temperature of the gas leaving the active coke zone .

单元接线机组自动准同期装置压差部分的调整基于Web的新型发变组微机监录系统

On The Debug And Setting Of The Voltage Part In The Automatic Accurate Synchronizer Of A Generator-transformer Unit An integrated state detection and record system for generator-transformer unit based on Web

MOCVD系统中压力和压差控制技术研究

Study on Control to Pressure and Difference - Pressure in Mocvd System

电压的变化反映了系统压差Δp的变化，根据Δp与s一一对应的关系，即可实现在线的气动检测。

The variation of voltage can reflect the variation of the system 's differential pressure Δ p , and according to the relation of Δ p and s , on-line pneumatic measurement become ture .

根据数学模型确定压差、输出转矩受工质蒸汽质量流量的影响，并设计流量控制器PID。

According to the mathematical model to determine the pressure difference , the output torque by refrigerant vapor mass flow , and design the flow controller PID .

制冷系统的改进措施：将冷凝后的CO2液体储存在集液器内，通过压差返回工艺罐。

The modification of refrigerating system was : storing condensed CO_2 in a liquid container , and returning into processing vessel under pressure difference .

采用Hurst分析描述了管内气液两相流不同流型的压差波动特征，发现压差波动信号中存在着不同程度的周期成分。

The result showed the periodic component was found in the differential pressure fluctuation signal .

研究了浓缩倍数、温度、跨膜压差（TMP）等因素对渗透通量的影响。

The effects of the factors , such as concentration , temperature and TMP , on the permeate flux have been studied .

动态模型用于PFBC锅炉水冷壁超压差的分析

Dynamic Modeling for the Analysis of Excess pressure Differences in PFBC Boiler Waterwalls

同时，对影响土壤蒸发的外界因素进行了分析。结果显示，气象因素中相对湿度、饱和水气压差和辐射同土壤蒸发有着密切的关系，在P

The study on factors effecting the evaporation of soil shows that the relative moisture , vapor pressure difference and radiation are major factors . They always connected water with their attitude . Study on the Relation between Specific Yield and Saturation Deficiency

目的探讨二尖瓣狭窄伴反流的患者用压差减半时间（PHT）法测量二尖瓣口面积的应用价值。

Objective To explore the clinical application of pressure half-time ( PHT ) method on rheumatic mitral stenosis coexisting mitral regurgitation .

通过提取压差波动信号的概率密度函数（PDF）分布特征，找到了各种流型的特征，可以作为流型识别的一种方法。

By abstracting probability density function ( PDF ) of the differential pressure fluctuation signal , we can obtain features of different flow pattern in horizontal pipe and use these features to differentiate flow pattern .

本文先利用经典的Godunov格式计算欧拉坐标下一维压差方程的数值解。

This dissertation firstly uses the classical Godunov scheme to compute the numerical solution of one dimensional Eulerian pressure gradient equations .

冶金性能检验表明，配用巴西PF精矿的球团矿，除低温还原粉化变差导致压差略有升高外，还原性、还原速率、还原膨胀、熔滴性能的变化不大。

In addition , no obvious changes were observed in metallurgical properties , such as reducibility , reduction rate , expansion after reduction , except for a little worse of RDI index and pressure difference .

用陶瓷膜处理含PVA退浆废水，研究操作压差、错流速度、温度等操作条件对膜通量的影响，确定合适的工艺。

Treatment of PVA-size wastewater with a ceramic dynamic membrane is studied . The effect of operation conditions including trans-membrane pressure , cross-flow velocity and temperature on permeate flux is investigated , and the optimum parameters are determined .

采用小波分析中Lipschitz指数可描述不同流型的压差波动特征，因此，根据计算得到的Lipschitz指数的大小，可以识别出泡状流、间歇流和环状流。

It is found that the flow patterns , including intermittent flow , bubble flow and annular flow can be clearly identified in accordance with their Lipschitz exponent of differential pressure signals .

应用人造血管与同种带瓣主动脉连接时，口径应大2～4mm，临床血液动力学效果好，基本无压差。

When the bore between aortic homograft and artificial blood vessel was 2-4mm , good result could be achieved in clinical hemodynamics and pressure difference was seldom found .

本文介绍了以选择性激光烧结（SLS）快速原型制造和真空压差铸造为基础的金属零件快速制造技术；

Basing on the Selective Laser Sintering ( SLS ) Rapid Prototyping ( RP ) technology and Vacuum Differential Pressure Casting ( VDPC ), a Rapid Precision casting ( RPC ) Process was introduced .

通过数值试验我们发现，当压差方程的黎曼解包含有弱简单波时，GRP格式也是不适用的。

We get our conclusion that GRP scheme for the pressure gradient equations can not be performed well either when the Riemann solutions contain weak simple waves , according to the numerical experiments .

根据末端设备AHU的阀门开度信号来改变最不利环路末端压差设定值，从而实现对水泵频率的控制。

Based on the valve opening of the end equipment AHU , the frequency of the pump is controlled over the change of the pressure difference value of index circuit .

泥浆柱压差应小于10MPa，以使泥浆侵入深度控制在较小范围内，减小油气层损害。

Mud column . pressure difference be lower than 10 MPa to allow mud density invasion depth and its damage on formation under control .

VNT通过调节废气涡轮增压器涡前压气后的压差，可将EGR率提高2%~12%。

The EGR rate could be increased by 2 % ~ 12 % through regulating the difference between the gas pressure before the VNT and the air pressure after the VNT by means of VNT adjustment .

实际运行中，GGH堵塞引起压差增大，严重时导致增压风机失速、锅炉跳闸，影响机组运行的安全性、经济性和环保效益。

In practical operation , GGH plug causes pressure increasing , leading to serious boosting fan stall , boiler trip ; and affecting the safety of plant operation , economy and environmental benefits .

该低压差电源可提供输出电流为1A的33V固定输出（压差为06V）和1A可调输出，并具有短路保护和过压保护等功能。

The low voltage dropout regulator is capable of providing both a 3.3-V fixed-output and an adjustable output with 1 A current and 0.6 V dropout voltage . It also provides short-circuit and over-voltage protections .

在Hermia模型的基础上对污染机理进行初步探讨，考察了跨膜压差以及进料流量对炭膜污染机理的影响；

At the same time , based on the HERMIA modelling , the fouling principle was investigated , studying the effects of trans-membrane differential pressure and concentration of oily-wastewater on it ;

结果重建术后1年，4位患者均存活，多普勒彩色超声心动图于术后7d、1年检查示肺动脉瓣膜关闭良好，无明显返流，跨瓣压差小；

[ Results ] After the reconstruction , all patients survive one year later . After 7 days and one year , color Doppler echocardiography showed pulmonary valves open and close well without obvious regurgitation , the pressure gradient was low ;