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During the fracturing for low pressure and low permeability gas reservoirs, there are some main problems in conventional hydroxypropylguar - organic boron cross-linking system: Firstly, the water-lock damage to low pressure and low permeability gas formations by filter liquor; Secondly, the reason for alkali-sensitive damage in alkali-sensitive reservoirs is that conventional hydroxypropylguar - organic boron cross-linking fracturing fluids were cross-linked under alkaline environment, while the permeability of reservoirs is reduced greatly; Thirdly, the formation pressure is low, and the energy of flow back is not enough, at present, the main measure in oil fields is "injecting with liquid nitrogen", but this technique increased the cost of fracturing, making great troubles in operating, and leaving the liquid nitrogen also is a big problem.

在低压低渗透气藏的压裂改造过程中，常规羟丙基胍胶-有机硼交联压裂液体系存在的主要问题，一是压裂液滤液对低压低渗透气层造成的水锁损害；二是常规羟丙基胍胶-有机硼压裂液是在碱性条件下交联的，对碱敏性储层造成碱敏损害，降低储层渗流能力；三是地层压力低，压裂液返排能量不足，当前各油田采取的措施主要是&液氮伴注&技术，但是&液氮伴注&技术增加了压裂的费用，而且液氮存放也存在较大问题。

This liquid can be separated from the gas in a liquid separator and reused.

此部分工作液可在汽液分离器中与气体分开，以重新利用。

This liquid can be separated from the gas in a liquid separator.

此部分工作液可在汽液分离器中与气体分开，以重新利用。

This liquid can be separated from the gas in a liquid separator.

泵可按需要配备汽液分离器，以保证在运转条件下连续地排放被污染的工作液。

G26L series color quartz glass liquid level gauge operates on optics principle that natural light is refracted in liquid.

G26L 系列彩色石英玻璃液位计通过自然光在液体中折射的光学原理，借助滤色红玻璃片，测量时，使液相显示绿色，气相显示红色，由于液、气相显示反差很大，所以指示鲜明清晰。

The company's main products are: single-color boiler water level gauge glass, quartz glass single two-color series of water level table; Maglev Series Direct Reading and Remote Level Gauge, magnetostrictive liquid level meter, electrode contact point and dual-listed water level gauge, inductive level sensors, external ultrasonic level gauge and a variety of liquid level sensor transmitter and control Alarm, etc. more than 10 types of level instrumentation.

公司的主要产品有：玻璃板单双色锅炉水位计、石英玻璃管式单双色系列水位表；磁浮式系列直读和远传液位计、磁致伸缩液位计、电极点及双联系列水位计、电感式水位传感器、外置式超声波液位计以及各种液位传感变送器，控制报警仪等十多个种类的物位仪表。

Wholly-owned subsidiary, Ningbo City Jiangdong scientific instruments factory specializing in the production of UFZ Series Magnetic Level Gauge flap, HG5 series of glass-type liquid level meter, HG5 Series Glass Plate Level Gauge, UGS Series Color quartz glass tube liquid level meter, digital display temperature controller, temperature transmitter, a computer program controller, digital DC regulated power supply, the exchange of automatic voltage regulator, DLD Series Intelligent Speedometer, electric tool speed control switches, meters and other products bubble tester.

下属全资企业宁波市江东科学仪器厂专业生产UFZ系列磁性翻板液位计、HG5系列玻璃管式液位计、HG5系列玻璃板式液位计、UGS系列彩色石英玻璃管液位计、数显温度控制仪、温度变送器、电脑程序控制器、数字直流稳压电源、交流自动稳压器、DLD系列智能车速里程表、电动工具调速开关、米泡测试仪等产品。

This study choose Changle Gaoya reservoir irrigation areas as the study sites, through the installation of different ultrasonic equipment on open channel of non-uniform flow to study the flow gauging of non-uniform flow in open channel:(1)5 tracks ultrasonic open channel flow meter used to real-time monitoring the flow of velocity ,water depth and discharge;(2)Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections ,then the computer calculated average water level, gradient of water table and discharge;(3)Change the open channel water conveyance into pipeline full flow water conveyance, installed the ultrasonic liquid level gauge and pipe flow gauge on the inflow point and surface of pipe, water level and discharge would detect in real time.

本研究以山东省昌乐县高崖水库灌区为研究地点，通过安装在灌溉明渠上的不同超声波设备对明渠非均匀流的测流进行了研究：(1)用五声波超声波明渠流量计对测流渠段的流速、水深及流量进行了实时监测；(2)用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；(3)将测流渠段明渠输水改造成管道满流输水，分别在管道进口前及管管上安装超声波液位计和管道式流量计，将水位和流量实时测出。

Based on the properties of ignition, combustion and interactions between Lp1846 droplts, some new idea about improving on design of regenerative liquid propellant gun interior ballistics is proposed, and a simplified model for the second crush and coalescence of droplet in regenerative liquid propellant gun chamber is also put forward.

根据LP1846液滴着火、燃烧及液滴间相互作用的规律，提出改进再生式液体发射药火炮内弹道设计的几点新的构想。

The reaction product thus obtained is then separated into a light solution and a heavy solution by the liquid-liquid separating means.

的反应，由此获得的产品，然后分割成一轻的解决办法和沉重的解决方案，由液-液分离的手段。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失