径中的

Under the given condition of acoustic driver, the acoustic field including oscillating pressure, volume flow rate and acoustic impedance in resonator was theoretically reconstructed by using the two-microphone method. The experiment results validate that this method is applicable and accurate for the positions with non pressure antinode and node in resonator. The maximum errors near antinode and node area are up to 12.4%.

在给定双声源条件下，采用双传感器法对该系统谐振管中的声场参数（包括声压、质点速度、当地声阻抗等）分布进行理论声场重构，并通过实验分析，证实了该方法在等径谐振管内非声压腹点和节点处的适用性和准确性，而在声压腹点和节点处的误差最大达到12.4%。

The aim of this paper is to propose a quantitative analysis of the texture,including density,size,shape and spatial distribution,of the biotite in Guéret granite by thin section study.

应用形态数学、图象分析及立体学原理，通过岩石薄片研究，对Guéret花岗岩内黑云母的结构特征进行了定量分析，揭示了黑云母矿物粒子在花岗岩中的密度、粒径、形状及空间分布的规律。

As stated above, to increase honing stone pressures can remarkably decrease ceramic critical grinding stresses, increase ceramic removal at the crosshatch intersection points, and promote the propagation of grinding cracks. The feasibility of efficient honing for ceramics is proved theoretically.

在上述研究结果基础上，分析了陶瓷材料塑性加工机理，磨削应力低于临界磨削应力是实现陶瓷材料塑性加工的理论依据，并提出陶瓷材料塑性珩磨加工中的两个主要因素：磨削深度和磨粒粒径的精确控制。

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。

Study and application on reservoir sensitivity of Baimiao gas condensate field ;2. Yangtake gas condensate field exists a suit of composite salt bed in Eogene system,in which interspersing soft mudstones.

羊塔克凝析气田位于塔北隆起羊塔克构造带1号构造东端，下第三系普遍存在一套复合盐岩层，特别是夹在复合盐岩层中的软泥岩、复合盐膏层缩径与井漏并存，造成井眼极不稳定，给钻井施工带来很多复杂和事故，其钻井风险很大，尤其是216mm井眼的电测和下套管作业更是异常困难。

This article mainly introduced the igniter plug iron casing crowds the pitch diameter working procedure swaging to design the entire process, it has produced the concrete design method and the step.

本文主要介绍了火花塞铁壳挤中径工序的冷挤压模具设计全过程，给出了具体的设计方法与步骤。

This article mainly introduced the igniter plug iron casing crowds the pitch diameter working procedure swaging to design the entire process it has produced the concrete design method and the step.

摘要本文主要介绍了火花塞铁壳挤中径工序的冷挤压模具设计全过程，给出了详细的设计方法与步骤。

The practice of deep well diameter extension and washing, blasting is introduced in this paper.

介绍深水井中的扩径与洗井爆破工艺，并就如何保证爆效、加工和密封装药容器及容器在高水压下是否发生屈曲失稳的验算等进行了叙述。

The fall-down stems chiefly distribute at the middle of slope and both side of the ridge. Their appearing frequency is in positive ratio to slope; The ones at middle of the slope are mainly shadow-intolerant tree species of small size, those at the side slope of ridge are mostly the big-sized dominant species in the community.

倒伏木主要分布在海拔1200～1800m之间坡面中部和顶脊两侧，发生频率与坡度成正比；坡地中部以中、小径级阳性树种为主，山坡顶脊两侧的倒伏木则多为大径级的群落优势种。

The monomer conversion efficiency and average particle size and its distribution of vinyl acetate polymerization by conventional and ultrasonic-assisted means individually were compared.

对比了醋酸乙烯在传统聚合中和超声波辅助聚合中的单体转化率和乳液粒径分布的差别。

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。