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The liquid phase is coupled device is the low voltage gradient itself in a high-pressure pumps add ratio valves in the atmosphere will be set according to the proportion of online several solvents mixed, then pump into the gas system.

液相色谱中的低压梯度洗脱装置就是在高压之前加上一个比例阀,在常压下将几种溶剂按设定的比例在线混合之后,再入色谱体系。

Note: The decompression valve role in continuing to do, there will be a part of the oil (about 1 L / min) flow back into the tank through the vent port lost the oil pump part of the output flow, so in a system, such as the use of several cut pressure valve, you must take into account the loss of pump output flow problems.

注意: 减压阀在持续做减压作用时,会有一部分油(约1 L/min)经泄油口流回油箱而损失的一部分输出流量,故在一系统中,如使用数个减压阀,则必须考虑到输出流量的损失问题。

According to the project practice of pumps in Yu-zhong Steelworks, this paper put forward some water hammer preventive measures of long distance pipe pump station of water supplying, such as the multifunction controlling valve of the water pump, one-way surge tank and vent valve, etc.

根据水锤计算的特徵线法,建立了出口附近设单向调压塔水锤计算的数学模型,结合榆中钢厂供水站的工程实际,提出了长管道供水站采用多功能水控制阀、单向调压塔、进排气补气阀对事故停水锤的防护措施。

The simulated distribution of the volume fraction of vapor phase under different outlet pressure and the variation of the cavitation flow ratio indicate that the intensity of cavitation is varied with the outlet pressure of the jet pump when driving pressure and suction pressure are fixed.

模拟所得到的不同出口压力下的气相体积分数分布以及汽蚀流量比的变化表明:当射流工作压力与吸入压力固定时,射流出口压力越低,汽蚀流量比越小,同时流量比越接近汽蚀流量比,空化也越严重。

By the study,the authors find that the pressure distribution is characterized by "nonlinear" and the motion of pump valve is the same,too.

对有杆抽油阀运动规律的研究和确定抽油阀筒内液体压力的分布是提高抽油机井系统效率研究的关键性课题。

Applied to adjust the casing pressure for ESP wells, it automatically discharges through the bleeding valve, the casing gas into oil/gas manifold, for the purpose of controlling the reasonable submergence depth of ESP intake, and preventing the shut-down of ESP due to gas lock or under-load. This not only ensures the normal pump operation but also enhances the pump efficiency and production rate.

常用于电潜套管压力调节,套管气通过放气阀排入输油管汇,以控制合理的电吸入口沉没度,防止潜油电发生因气锁现象的发生导致的欠载停,保证电的正常运行,提高效及产量。

Impeller rotates clockwise, the right part of the space between two blades is gradually increasing, in confined conditions, with the air volume increases, pressure decreases, the formation of vacuum pumps and air through the pipeline suction tube into the vacuum pump the right side of the crescent-shaped shell inspiratory mouth to be sucked into vacuum pump, vacuum pump impeller left some space between the two blades is gradually reduced, so the air is compressed, the pressure then increased, and finally through the vacuum pump shell crescent-shaped exhaust port from the left side of vacuum pumps, gas separator into the water box, so that was taken out after the separation of the recycled water reuse.

叶轮顺时针方向旋转时,其右半部分两叶片之间的空间逐渐增大,在密闭条件下,随着空气体积的增大,压力随之降低,形成真空,水和管路内的空气通过吸气管,进入真空壳右侧的月牙形吸气口被吸入真空,真空叶轮左半部分两叶片之间的空间是逐渐减小的,因此空气被压缩,压力随之增高,最后通过真空壳左侧月牙形排气口排出真空,进入水气分离箱,使被带出的循环水分离后再重复使用。

Rotary piston pumps always used as backing pumps of vacuum systems in vacuum induction oven s.

真空感应炉真空机组中的前级,历来使用滑阀

"The delivery rate of two-cylinder piston pump with the patented concrete valve can be adjusted from 2 cubic meters/h to a maximum of 34 cubic meters /h, for pumping pressures of up to 65 Bar ."

双缸活塞装有取得专利的混凝土阀,其输送速度的范围从2立方米/小时到34立方米/小时,送压力可达65巴。

In order to study the flow characteristics inside the double-channel impeller, a testing pump was designed and produced according to the special requirements for PIV measurement with two different impellers, i.e., the double-channel impeller and the two-blade impeller.

为研究双流道叶轮与普通叶片式叶轮的内部流动区别,设计制作了满足粒子图像测速仪测量要求的模型,模型的叶轮有双流道和双叶片2种形式。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。