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We are a company specialized in manufacturing brake calipers, master brake cylinder, wheel cylinder and other chassis parts.

公司专业生产各类轿车制动钳和制动总、分、离合器总、分等底盘零部件配件。

Screw pumping well working status macroscopic control chart is a sheet for indicating the pump working status, according to the needs of well production and well control, it is a diagram to indicate the relations between outlet pressure and pump efficiency.

螺杆油井工况宏观控制图是根据油井生产和管理需要而绘制的用于反映螺杆油井工作状况的图件,它实际上是入口压力与效的关系简图。

Fill the role of letter is to pump shell and closed the gap between the shaft from the water pump does not flow outside to not let outside air into the pump.

填料函的作用主要是为了封闭壳与轴之间的空隙,不让内的水流不流到外面来也不让外面的空气进入到内。

Fill the role of letter is to pump shell and closed the gap between the shaft, not pump the water does not flow to the outside to not let the outside air into the pump.

填料函的作用主要是为了封闭壳与轴之间的空隙,不让内的水流不流到外面来也不让外面的空气进入到内。

The design mainly works on many factors which effecting the volume efficiency of fracturing pump. These factors are working conditions of the pump,imbibitional valve,expulsive valve,clearance volume,sealing property, condensability of influent, liquid leakage and elastic defletion of pump cylinder. Based on these facors, we should induce the efficiency expression, famulate differential eguation and emulational mathematical model of fracturing pump.

本设计主要针对影响压裂容积效率的因素如:的工作情况、吸液阀结构参数、余隙容积、密封性能、液体的可压缩性、液体泄漏、缸的弹性形变等方面进行分析,在此基础上导出效率的表达式,建立微分方程,并建立压裂效率仿真的数学模型。

CQB-G uses multiple circulating cooling structure to ensure the dependability and stability of prime mover and magnetic drive. Meanwhile, pin coupling is used to reduce the noise and vibration of pump. The detachable type and pin coupling makes the structure of pump longer, which is good for heat dissipation.

CQB-G型磁力高温采用多重循环冷却结构,保证了原动力和磁传动的可靠性和稳定性,同时采用柱销联轴器减少了的噪音和震动,便拆式和柱销联轴器同时使用,使的结构增长,更有利于的散热。

CQB-G uses multiple circulating cooling structure to ensure the dependabilitystability of prime movermagnetic drive. Meanwhile, pin coupling is used to reduce the noisevibration of pump. The detachable typepin coupling makes the structure of pump longer, which is good for heat dissipation.

CQB-G型高温保温采用多重循环冷却结构,保证了原动力和磁传动的可靠性和稳定性,同时采用柱销联轴器减少了的噪音和震动,便拆式和柱销联轴器同时使用,使的结构增长,更有利于的散热。

paramedic should be strengthened ceaselessly about the retraining that accuses demulcent pump knowledge oneself, undertake to the patient before accusing demulcent pump to apply oneself; of true propaganda and education is in the life style that the rigor in accusing demulcent pump to use a process oneself observes a patient is asked for, enhance the security that accuses demulcent pump cure oneself and effectiveness, rise nurse quality.

结论护理人员应不断加强有关自控镇痛知识的再培训,在自控镇痛应用前对患者进行正确宣教;在自控镇痛应用过程中严密观察患者的生命体征,加强自控镇痛治疗的平安性和有效性,提高护理质量。

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,研究了沥青的容积效率特性,修正了沥青容积效率公式,为沥青喷洒系统的匹配和沥青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。

Through in the practice feeling about divulgement, vibration and synthesis operational performance of the pump and life of the key components and the pedestal and intact operating horary inside contact in whole set, try to look for one kind of reasonable and economical corrosion resisting stainless steel material of the pedestal and pump body,in the hope prolonging ZA200-315A and HC200-250A type stainless steels acid resisting pump whole set operation life.

通过实践摸索的泄漏、振动及综合使用性能和关键部件的寿命、底座寿命与整机完好运行时间的内在联系,试图寻找一种合理经济的耐腐蚀不锈钢底座及身材质,以期延长ZA200—315A型及HC200—250A型不锈钢耐酸的整机运行寿命。

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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。