查询词典 pressure pump

To accelerate the widespread of Synchronous Chip Seal and improve the operation quality of Synchronous Chipsealer, key techniques which influence the operation quality is studied detailedly, including the control of distributing quality, the dynamics characteristics of hydraulic system and the spray characteristics of asphalt nozzle of Synchronous Chipsealer.1 The factors which influence Synchronous Chip Seal quality are studied. Fiducial probability of simultaneous distribution density is advised to be used in evaluating the distribution bias and standard deviation of asphalt and aggregates simultaneously, which is more advanced than the single index evaluation method used before.2 The volume efficiency formula of asphalt pump is revised after analyzing the data of volume efficiency with mathematical statistics, which is helpful to match the asphalt spray system and control the flow out of asphalt pump accurately. With equation deduction and experiment, dynamic of hydraulic system used in Synchronous Chipsealer is studied, which lay the theory foundation on improving the stability and efficiency from design and controlling.4 Simulation on hydraulic system used in Synchronous Chipsealer is done with AMESim; the results indicate that multi-circle parallel connected hydraulic system with constant pressure power is better than that with load-sensing pressure power at present, because the latter will oscillate when the multi circles work at the same time. This conclusion has been proved during the debug of Synchronous Chipsealer.5 Asphalt nozzle characteristics, such as flat jet shape, flow distribution, are studied with experiment, the results indicate that cross quality of asphalt distributing is not increased linearly follow the increase of fan overlap level, the best point usually exists between two whole overlap level, asphalt distributing quality is better than±4% at the 2.5 overlap level, meets the superior specified in standard; The distribution quality of Synchronous Chipsealer can be increased by spray asphalt of different flow rang with nozzle of different diameter

为了加快同步碎石封层技术的推广，提高同步碎石封层设备的作业质量，本文对同步碎石封层设备作业质量的影响因素与控制方法、液压系统的动力学特性和沥青喷嘴的喷洒特性等关键技术进行了深入细致的研究：1研究了影响同步碎石封层作业质量的因素，提出了采用联合密度分布置信概率对同步碎石封层中沥青洒布量和碎石撒布量的系统偏差和标准差指标进行综合评价的方法，克服了传统评价方法只能对单一指标进行评价的缺陷；2采用数理统计的方法，研究了沥青泵的容积效率特性，修正了沥青泵容积效率公式，为沥青喷洒系统的匹配和沥青泵出口流量的精确控制提供了依据；采用数理方程推导与试验相结合的方法，研究了同步碎石封层设备液压系统的动力学特性，为从设计和控制的角度提高同步碎石封层设备液压系统的稳定性和效率奠定了理论基础；3运用AMESim软件对采用负载敏感控制和恒压控制的两种同步碎石封层设备液压系统进行仿真，结果表明：负载敏感控制的并联液压系统在多回路同时工作时，由于液压泵排量控制参考压力不稳定，容易引发液压系统振荡，恒压控制的并联液压系统是目前技术条件下比较理想的同步碎石封层设备工作装置驱动方案；该结论亦通过同步碎石封层设备装机试验得到了验证。4采用试验的方法对沥青喷嘴的喷洒特性进行了研究，结果表明：沥青洒布的横向精度并不是随着喷洒扇面重叠度的增加线性增加，其最高点通常出现在二个重叠度之间的"半重叠位置"，"2.5重叠"洒布时，沥青的横向洒布精度≤±4%，可以达到国家相关标准中的优级标准；同步碎石封层设备还可以根据不同洒布量情况下的流量需求，采用不同通径的喷嘴进行喷洒，提高沥青洒布精度。

Group of Seven holding company subsidiary, is the design, development, manufacturing, sales, service integrates a variety of double-screw pump, the three screw pumps, high pressure hydraulic gear pumps, low pressure and vacuum pump gear-driven products Specialization large manufacturers.

集团下属七大控股公司，是集设计、开发、制造、销售、服务为一体，以各种双螺杆泵、三螺杆泵、高压液压齿轮油泵、低压齿轮输油泵及真空泵为主导产品的专业化大型生产厂家。

Digital Inverter Generator, Power Tool , Steam Wallpaper Stripper, Electric Airless Paint Sprayer , Jig Saw, Electric Planer , Bench Grinder , Water Grinder , Belt Sander, Mini Grinder , Electric Auto ScrewDriver, Reciprocating Saw, Hammer Drill, Demolition Breaker , Thickness Planer Band Saw, Miter Saw , Table Saw , Route Table , Scroll Saw Bench Planer , Parts Washer , Diamond Core Drill , Magnetic Drill , Rebar Cutter , Electric Punching Cutter, Drywall Sander , Air Pump, Cordless Angle Grinder , Cordless Circular Saw , Cordless Spiral Saw, Cordless Jigsaw , Cordless Planer, Cordless Vaccum Cleaner Cordless Reciprocating Saw, Cordless Delta Sander , Cordless Falre Tool, Flaring Tool Cordless Ratary Light, Cordless Tool Set, Cordless Tool , Cordless Drill , Cordless Hammer Drill , Polishing Machine, Cordless Car Polisher, Cordless Impact Wrench , Gasoline Impact Wrench, Cordless Caulking Gun , 12V Auto Jack, Impact Wrench Car Polisher Garage Tool , Cordless Caulking Gun, Gasoline Pressure Washer , High Pressure Washer , Tile Cutter, Masonry Saw, Tile Saw , Construction Machinery , Flat Vibrating Polisher , Vibrating Spear, Plug-in frequency vibrato, r Rammer, Power Trowel, Plate Compactor, Concrete Mixer , Steel Cutter , Chain Saw Gasoline Chainsaw Cordless Chain saw , Electric Chain Saw , Pole Saw , Chainsaw Sharpener , Chipper Shredder , Earth Auger Gasoline Tiller , Cropper Grass Trimmer, Brush Cutter Hedge Trimmer , Lawn Mower Electric LawnMower , Cordless Lawn Mower, Gasoline Lawn Mower Hand Push Cylinder Mower Leaf Blower , Gasoline Leaf Blower , Garden Pump , Hover Mower , Lawn Raker Motor Hoe , Snow Thrower , Log Splitter , Firewood Cutting Saw , Log Saw , Diesel Tiller Gasoline Tiller Gasoline Chipper Shredder, Chipper Shredder Gasoline Grass Trimmer , Gasoline Brush Cutter, Electric Brush Cutter , Electric Grass Trimer, Lawn Edgers, Cordless Grass Trimmer Electric Hedge Trimmer

数字变频发电机，电动工具，汽提塔壁纸，电动喷雾器气油漆，曲线锯，电动刨床，砂轮机，水磨机，砂光机，小型磨粉机，电动汽车螺丝刀，往复锯，锤钻，拆除断路器，带厚度刨床锯，锯字，表看到，路由表，滚动看到板凳刨床，部分洗衣机，钻石核心的演习中，磁性钻，钢筋切割机，电动切割机穿孔， Drywall桑德，空气泵，无绳角磨机，无绳圆锯，无绳螺旋看见，无绳拼图，无绳刨床，无绳吸尘器无绳往复锯，无绳三角洲桑德，无绳Falre工具，燃烧工具，无绳Ratary轻，无绳工具集，无绳工具，无绳演练，无绳锤钻，抛光机，抛光车载无线电话，无绳冲击扳手，汽油冲击扳手，无绳堵漏枪， 12V的汽车千斤顶，扳手影响车库汽车抛光工具，无绳堵漏枪，汽油压力，洗衣机，高压清洗，瓷砖切割机，泥瓦工看到，瓷砖看到，工程机械，平板振动抛光，振动长矛，插入式高频颤音，俄夯，电力抹子，板机，混凝土搅拌机，钢刀具，汽油链锯电锯无绳链锯，电链锯，锯极点，电锯磨刀，琼斯碎纸机，地球俄汽油分蘖，克罗珀基层裁纸机，刷机对冲裁纸机，割草机电动LawnMower ，无绳割草机，汽油割草机手推割草机缸叶片风机，风机叶片汽油，花园泵，悬停割草机，草坪耙汽车锄头，雪标枪，日志分流，木柴切削看到，记录看到，柴油汽油分蘖分蘖汽油琼斯碎纸机，琼斯碎纸机基层汽油机，汽油刷机，电刷镀机，电动基层三聚体，草坪Edgers ，无绳基层裁纸机机对冲电气

Pressure gauges, hand grease gun, pressure lubricating pump, tyre pump, luggage carrier , equipment for galvanisation.

压力表，手动抢装置，压力润滑泵，轮胎泵，行李运送装置设备

The method is right 58 patients among them 36 acute cardiac muscle straightens dead , stalk of 22 dated cardiac muscle is dead spends heart function again not complete patient, minim pump pump is combined into saltpetre general natrium much cling to drop of small dose of Min of · of G/kg of amine 1.0~3.0 μ is noted, maintain blood pressure to be between 90~120/60~80 Mm Hg, observe heartbeat, blood pressure and heart function improve circumstance and harmful response.

方法对58例患者其中36例急性心肌梗死，22例陈旧心肌梗死重度心功能不全患者，微量泵泵入硝普钠联合多巴胺1.0~3.0μg/小剂量滴注，维持血压在90~120/60~80 mm Hg之间，观察心率、血压及心功能改善情况以及不良反应。

The characteristic of engine working at different mounting way and different environment is analyzed. Selecting pump pressure, speed difference and its variance ratio as input, and current of pump power control and pressure difference control as output, fuzzy control is adopted to improve the power matching and energy saving control method.

分析了在不同安装方式和不同环境下发动机的工作特性，以液压泵的压力，转速差和转速差的变化率作为输入，泵功率控制电流和负载压差控制电流作为输出，采用模糊控制对动力系统的匹配与节能控制方法进行了优化。

The attainable pressure of the pump piston compressor is always considerably higher than the maximum pump pressure.

泵的内置活塞压缩机可达到的压力总是高出泵的最高压力许多。

Then, the method to estimate cavitation erosion characteristic of high pressure piston plunger pump by analyzing impingement angle on outlet of throttling groove is put forward. That is, to hold the impingement angle range of 30°～60°as appraisal criterion of cavitation erosion characteristic on high pressure hydraulic plunger pump.4 The throttling characteristic of hydraulic control valve is studied by CFD calculation and experiment.

最后，提出了一个通过分析节流槽出口处的射流方向来评价高压轴向柱塞空蚀特性的空蚀评价方法，即将节流槽出口的射流角范围30°～60°作为评价高压轴向柱塞泵空蚀特性的标准。4对液压控制阀的节流特性进行了CFD数值计算和试验研究。

7Th, the linkage part including the fire extinguishing pump, sprays the pump, to discharge fume the air blower, the positive pressure air blower, the lift control, the roll-up door control, the non-fire prevention to cut the power source, the positive pressure supply-air outlet, to discharge fume electrically operated the mouth, the acousto-optic warning, 280 degrees fire resisting dampers, the gas fire fighting, the fire-alarm urgent broadcast and so on.

联动部分包括消防泵、喷淋泵、排烟风机、正压风机、电梯控制、卷帘门控制、非消防强切电源、正压送风口、电动排烟口、声光警报、280度防火阀、气体灭火、火警紧急广播等。

Hemodynamic parameters including heart rate, cardiac output, systolic blood pressure, diastolic blood pressure, mean arterial pressure, central venous pressure,right ventricular end-diastolic pressure,left atrial pressure, and left ventricular end-diastolic pressure were monitored and recorded at 5, 60 and 180 min after cardiac resuscitation with PUCA pump.

结果无辅助、延迟辅助和即时辅助复苏持续时间分别为(38.3±5.8) min、(43.5±9.2) min和(48.7±23.8) min，3组比较差异无显著性(P＞0.05)；3组成败比分别为0/3、0/2和5/1，差异有显著性(P＜0.05)。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。