闸板

Constant Flow Valve and the constant flow regulating valve are different:there is only one fixed flow valve valve from the valve directly feel before and after the differential pressure valve,the implementation of change in valve resistance action can be"direct action type variable resistance valve",闸阀;It should not regulate the flow line,so the use of Constant Flow Valve can not be implemented to change the total flow of energy to run,and this set the flow valve as there are no imports of expensive,in the past,domestic heating systems seldom used,and only at some central air conditioning system to see.

订流量阀和恒流量调节阀不同的是：定流量阀只需一个阀瓣，由这个阀瓣直接感受阀门的后后佳压，执行转变阀门阻力的动做，否成为"直动式变阻力阀"，facebook外白板，它没有能在线调节流量，研建课，因己运用定淌量阀无法实施改变合流量的节能运行，而且这种定流量阀海外不，入口的价钱昂贵，以来国内的供暖体系很少采用，只需在一些中央空调系统内见到。

Increased the development ability of the new product of my company.The product once exports 9 nations of Vietnam,Bengalese country,Pakistan,Indonesia,Thailand,Taiwan...etc.ses with the region.

产品曾出口到越南、孟加拉国、巴基斯坦、印尼、泰国、台湾等9个国家和地区，我厂研制的新产品新型空气换向闸板获得国家专利，专利号：

The valves feature a replaceable abrasion resistant Chloroprene seat, a 304 stainless steel seat guided gate, and PTFE packing.

这种阀门配置可更换的耐磨损氯丁二烯阀座，304不锈钢阀座引导的闸板，以及PTFE密封填料。

Valve closed, sealing surface can only rely on Rising Stem Resilient Seated Gate Valve media pressure to seal, in which the medium pressure to ram pressure to the other side of the sealing surface of the valve seat to ensure the sealing surface of the seal, which is a self-sealing.

闸阀关闭时，密封面可以只依靠介质压力来密封，即依靠介质压力将闸板的密封面压向另一侧的阀座来保证密封面的密封，这就是自密封。

Gate of shortcomings:(1) easy to damage the sealing when the damper open and close the valve seat in contact with the two relative friction between the seal and easy to damage, which affects seals with the life and maintenance more difficult.

闸阀的缺点：(1)密封面易损伤启闭时闸板与阀座相接触的两密封而之间有相对摩擦，易损伤，影响密封件能与使用寿命，维修比较困难。

Gate of shortcomings:(1) easy to damage the sealing surface when the damper open and close the valve seat in contact with the two relative friction between the seal and easy to damage, which affects seals with the life and maintenance more difficult.

闸阀的缺点：(1)密封面易损伤启闭时闸板与阀座相接触的两密封而之间有相对摩擦，易损伤，影响密封件能与使用寿命，维修比较困难。

Open and close a long time and a high degree of large gate valves open and close as to be fully on or off, Cast Steel Gate Valve Series damper large, open space use to a certain, high dimensions, large space required for installation.

启闭时间长，高度大由于闸阀启闭时须全开或全关，闸板行程大，开启用要一定的空间，外形尺寸高，安装所需空间较大。

Six are a wide range of applicability and flexibility, can be used in Daejeon, economic crops, vegetables and orchards; are seven gate opening set, from the beginning to the end of irrigation, without manual operation, greatly reducing labor irrigation to improve water working conditions; are eight gates to control irrigation systems and drainage Irrigation District, full-motion can also be used as pipe to replace the fields of agricultural,毛渠,斗渠to achieve from畦沟with water, can also be used as surge irrigation water distribution pipes at the end of class .

六是具有广泛的适用性与灵活性，可用于大田、经济作物、蔬菜和果园；七是闸板开度设定后，从开始到灌水结束，无需人工操作，极大地减少灌水用工，改善灌水的工作条件；八是闸管灌溉系统可与渠灌区、也可用作全移动管道输水，替代田间农、毛渠，完成从斗渠到畦沟配水，还可用作波涌灌溉的末级配水管道。

Wedge gate valve is usually no valve chamber overpressure protection 2, no clear protection bar gate, not recommended.

契形闸板阀通常没有阀腔超压保护 2、无保护的明杆闸阀，不推荐使用。

For the nuclear safety-related parallel sluice valve,vibration performance computation and analysis is obligatory during its safety evaluation.

同时，以PZ62Y-50/150型核岛平行式双闸板闸阀为例，讨论了采用三维有限元分析软件进行核安全级阀门振动特性分析的基本思想和过程。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。