工作容积

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泵容积效率的因素如：泵的工作情况、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、泵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，并建立压裂泵效率仿真的数学模型。

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。

The source images of MR hydrography (heavy TSE-T2WI sequence) were reconstructed on workstation. Four 3D post-processing algorithms, including maximum intensity projection, surface shaded viewing, volume rendering and virtual endoscopy, were performed and compared with barium study and endoscopy.

MR水成像扫描（重度T2加权TSE序列）的源图像在工作站上以最大强度重建法、表面遮盖法、容积透视法和仿真内镜法作三维图像后处理，并与钡餐造影和胃镜图像相对照。

Research on the effects of different operating parameters of the new OSB blender on the performance of OSB made by blended particle was conducted.

研究新型定向刨花板拌胶机的不同工作参数对拌胶刨花压制成的OSB板子性能的影响，试验结果表明：拌胶机滚筒的装载量以刨花占滚筒容积15%为宜，最佳转速为13 r.min-1，采用抄板气流流态控制和针滚机械干涉方法，均能使刨花处于良好的受胶状态，胶液均匀分布，提高板子的力学性能。

by using the software mathcad, the simulative calculation on water quality equalization has been made on a typical water sample. five kinds of mathcad worksheet used commonly the compiling method of mathcad worksheet and the simulative calculation procedure for the minimum effective volume of the equalization basin is presented. the reason for the subtle different in the results of different method is also explained. at last the author shows us the function of water quality equalization by polar diagram.

环境摘要：利用mathcad软件对一个典型水样进行了水质均化的模拟计算，给出了五种常用均质过程模拟算法的mathcad工作表，介绍了mathcad工作表的编制方法及水质均化池最小有效容积的模拟计算步骤，说明了不同模拟算法的计算结果存在细小差别的原因，以极坐标图显示了水质均化的作用。

Force strength brand DCC800 parameters Serial program unit technical parameters 1 KN8000 clamping force 2 mm760 clamping trip 3 mould thickness (minimum - most mm400-950) 4 template size mm1400 level x x 1395 5 LinZhu elder brother mm910 910 from within 6 elder brother LinZhu mm180 diameter 7 booster shot force (KN665 8 mm760 trip shot materials 9 hammer mm80 diameter, 90, 100 10 shot Kg7.2 feed, and 9.1 11.2 11 casting Mpa132.8, 1.01, 85 12 casting cm2600 area, 760, 940 13 biggest casting 40Mpa area (cm22000) 14 shot cm2mm - 250 Kg/position 15 punch out mm297 distance 16 ejection chamber flange diameter mm200 17 ejection chamber flange plate height mm20 set out 18 top KN315 output 19 the mm180 trip 20 Mpa14 work pressure system 21 KW37 motor power 22 tank L1200 volume 23 machine Kg39400 weight 24 machine envelop dimensions by 2010 mm8

力劲牌 DCC800参数序号项目单位技术参数 1锁模力KN8000 2 锁模行程 mm760 3模具厚度mm400-950 4模板尺寸mm1400×1395 5哥林柱内距mm910×910 6哥林柱直径mm180 7压射力KN665 8射料行程mm760 9锤头直径mm80、90、100 10 射料量 Kg7.2、9.1、11.2 11铸造压力Mpa132.8、104.9、85 12铸造面积cm2600、760、940 13最大铸造面积（40Mpa）cm22000 14压射位置Kg/ cm2mm-250 15冲头推出距离mm297 16压射室法兰直径mm200 17 压射室法兰凸出定板高度mm20 18顶出力KN315 19顶出行程mm180 20 系统工作压力Mpa14 21电机功率KW37 22油箱容积L1200 23机器重量Kg39400 24机器外型尺寸mm8660×2010×2780

Rotary piston pump is a new structure of water pumps, running a very reasonable job, using the principle of variable volume compression job, a direct-driven rotary manner, as opposed to centrifugal pumps have a series of outstanding performance advantages, rotary piston pump with the complexity of the structure of the centrifugal pump, as with the shell and the rotor blades of the rotor and casing of the rotary continuous variable volume zone, the formation of continuous expansion and compression, pumping and pumping implementation functions.

旋转活塞水泵是一种新型结构的水泵，工作运行状态十分合理，采用变容积压缩原理工作，直接旋转方式驱动，相对于离心式水泵有一系列突出的性能优势，旋转活塞泵结构的复杂程度与离心泵一样，由外壳和带叶片的转子组成，转子与外壳形成连续的旋转变容积区，形成连续的扩张和压缩，实现抽水和扬水的功能。

With the development of lesion inautonomic nervous system, i.e. the elevation of baroreflex set point, blood pressureincreases to stage 1 hypertension and worsens. Furthermore, the role of the effectors,including PVR, ventricular end-systolic elastance, venous unstressed volumes and heartrate, in the regulation of hypertension was analyzed. The results exhibit that the ANSregulation on hypertension works mainly by the reduction of PVR and the increase ofvenous unstressed volume.

随着自主神经系统损坏程度的不断加重，即工作调定点进一步升高，血压水平上升到了1级高血压并趋于严重；研究了神经调节的各效应器(外周血管阻力、心肌最大弹性度、心率和静脉非压力容积)对高血压的作用，表明神经调节机制对高血压的调节主要是通过降低外周血管阻力和增加静脉非压力容积实现的。

Computerizing the management of package freights and selecting freights for the loading of hazardous goods can take full advantage of static load and load capacity of freight cars and raise efficiency on the basis of safe transportation.

用计算机实现对普通零担货物配装工作的管理，可在保证货物安全运输的基础上，充分利用车辆的容积和载重，提高工作效率。

Screw pump the working principle is: screw pump work, the liquid after being inhaled into the screw pump shell and sealed by Wai space, when the initiative screw rotation, the screw pump seal volume in the squeezed increase Luoya Screw pump pressure, and along the axial movement.

螺杆泵的工作原理是：螺杆泵工作时，液体被吸入后就进入螺纹与泵壳所围的密封空间，当主动螺杆旋转时，螺杆泵密封容积在螺牙的挤压下提高螺杆泵压力，并沿轴向移动。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。