水阀

Ground near plumbingware products to sell the pearl river delta region are exported to overseas, diligence plumbingware main products are: sanitary ware, showers, hoses, stainless steel hand-wash basins, fire equipment, decorative accessories, water, and gas decompression valve, water, copper, iron and valves, flushing cisterns, with raw materials, galvanized fittings, brass fittings, pvc.ppr accessories, accessories such as 304 stainless steel plumbing fittings.

勤达水暖产品近销珠三角地区远销至海外各地，勤达水暖主营产品有：卫浴洁具、花洒、软管、不锈钢洗手盆、消防器材、装饰附件、下水器、煤气减压阀、水表、铜铁阀门、冲水水箱、生料带、镀锌配件、黄铜配件、pvc.ppr配件、304不锈钢配件等各类水暖器材。

Ground near PLUMBINGWARE Products to sell the Pearl River Delta region are exported to overseas, diligence PLUMBINGWARE Main products are: sanitary ware, showers, hoses, stainless steel hand-wash basins, fire equipment, decorative accessories, water, and gas decompression Valve, water, Copper, Iron and valves, flushing cisterns, with raw materials, galvanized fittings, brass fittings, PVC.

勤达水暖产品近销珠三角地区远销至海外各地，勤达水暖主营产品有：卫浴洁具、花洒、软管、不锈钢洗手盆、消防器材、装饰附件、下水器、煤气减压阀、水表、铜铁阀门、冲水水箱、生料带、镀锌配件、黄铜配件、PVC。

The company since its inception has been engaged in the development of hydraulic parts and sales; main products have various types of hydraulic tubes and assembly of hard and soft, hydraulic components, Japan Construction Machinery Co., Ltd. chassis parts, instrumentation, etc.; distribution of the major brands have Germany Hose Sunway, Italy Manuli, Germany Aeroquip, the United States Sel, the United States MEGASPIRAL, Libao, etc.; Express connector (Italy: DNP brand), the management folder, resin tube (UK: EUROFLOW brand), high pressure ball valve, Teflon tube, withhold machine (Finland: FINN-POWER), a variety of industrial tubes, such as high-temperature steam pipes, cement pipes and so on.

公司自成立以来一直从事液压零件的研制和销售；主要产品有各种型号的液压软硬管及总成、液压零部件、日本株式会社工程机械底盘件、仪器仪表等；经销的胶管品牌主要有德国Sunway 、意大利Manuli 、德国Aeroquip、美国Sel 、美国MEGASPIRAL、Libao等；快速接头，管夹，树脂管（英国：EUROFLOW品牌），高压球阀，铁弗龙管，扣压机（芬兰：FINN-POWER），各种工业管，如高温蒸汽管，水泥浆管等。

Designed to retrofit backflow protection onto fire hydrants used for temporary water service.

适用于用在临时性水应用的消防栓上的防回流阀的更新改造。

The trace amount of impurities,namely C5,tert-butyl alcohol,di-secondary butyl ether,methyl ethyl ketone and secondary butyl alcohol,in C4 hydrocarbon from butylene hydration tail gas were analysed by means of gas chromatograph with a column packed with sebaconitrile and polyethylene glycol-20M,and liquid-phase admission valve.

2m×4mm为填充柱，采用液相进样阀液态直接进样的填充柱气相色谱法分析了丁烯水合尾气C4烃中的C5、叔丁醇、二仲丁醚、甲乙酮及仲丁醇等微量杂质的含量。

The spike pressure increases with the unloader setting until it becomes so great that damage begins to occur in the system broken hoses, blown valve caps, leaking unloaders and so on.

当减呵器将水引至旁路时，就会减荷器的压力就会高于其设定压力，如果压力太大，就会损坏泵；软管爆裂，阀盖炸开，减压器泄露等。

Sample matrix are discharged by the pre-column. The mobile phases applied consisted of 0.1% HOAc (pH3.0) acetonitrile-water on extraction column with UV detection at 225nm. Then, coupled-column liquid chromatographic methods for the direct analysis of atrazine and simazine in urine was established. As a result, the system showed good chromatographic property in the on-line analysis of atrazine and simazine in urine.

使用该系统对尿中的莠去净和西玛津残留进行了分离分析，以含有0.1%乙酸的酸性水缓冲液对加标尿液中莠去净类化合物保留在预柱上，干扰分析的大分子被排阻而无保留通过，其它干扰分子保留小而通过，再切换六通阀，以乙腈和0.1%乙酸水溶液进行梯度洗脱，进而在下一级ODS分析柱上进行分离（紫外检测225nm），两种除草剂的分离分析取得了良好的定性定量结果

The main product comprises silp-valve vacuum pumps, root vacuum waterring vacuum pumps, series roary vance vacuum pumps and various kinds of vacuum pumps system,Our products are widely used in areas,covering metallurgy, chemical industry,medical and pharmaceutical appliction, light and textile industry, electrical industry, defence scientifice researches etc,.

我厂主要产品有：滑阀真空泵、罗茨真空泵、往复真空泵、水环真空泵、旋涡泵各类真空机组、及真空应用设备，与供氧设备，其也通用设备制造、加工、修理。真空浸渍我厂产品广泛应用于冶金、化工、医药、经纺、电子、国防、科研等部门。特别H-8B型泵，在原有基础上经过改进，获得了更高的真空度和使用寿命。

A cold-water supply system consists essentially of a communication pipe、a meter box、pressure boosters、storage taks、a piping line、valves and water-dispensing fixtures.

一个冷水给水系统的基本组成是：引入管、水表盒、增压设施、贮水箱、管道、闸阀和配水器具。

Then, experimental study on the noise performance of the hydraulic piston pump under different conditions has been accomplished.

针对一种新型的阀配流式水压轴向柱塞泵的结构特点，分析其噪声产生的机理，在不同条件下对水压泵进行噪声特性的试验研究，并在此基础上提出有效的降噪措施。

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。