有阀的功能的

Here is the main content.The control unit of this system use 8031 as the controller of CPU. It can collect the pressure singals of the gasoline tank and adjust the big and small of the fuel vapor pressure, cooperating with steam pressure sensor and electromotion valve.

主要内容有以下几点：(1)测控系统的控制部分是以8031单片机为CPU的控制器，它配合蒸汽压力传感器和电动调节阀完成油箱内信号采集和汽油蒸汽压力调节功能。

The use of imported high quality raw materials to produce products that have tubes, pipe fittings, valves, multi-purpose spray equipment, Rotameter, automatic hydraulic valve, squeeze hard plate, heat-resistant ABS Products, CPVC hot and cold seafood, clean UPVC Products such as the top ten of the 80 series, 1000 specifications.

采用进口优质原料生产的产品有管材、管件、阀门、多功能喷具、转子流量计、全自动液动阀、挤压硬板、耐热ABS产品、CPVC冷热水产品、洁净UPVC产品等十大部分，80个系列，1000个规格。

Compared with the traditional positioners, this has many advantages, such asproviding high control accuracy with low air consumption, low energy consumption,self-adjusting, wide application, the ability which can choose the flow characteristicand split range operation. Moreover, it has the function of displaying valve positionand sending alarm signal. At present, HART protocol instruments have wide marketrequirements. And it will play the leading role in the future.

与常规定位器相比，该定位器具有控制精度高、能耗低、调整方便、适用范围广及可任意选择调节阀流量特性和分程范围等优点，同时该定位器还具有阀位显示和故障报警等功能，有着广泛的市场需求，并将在相当长的一段时间内发挥主导作用。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。