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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 acid rain attack not only made concrete surface desquamate,aggregates denudate,but also made concrete mass decrease,compressive strength reduce and neutralization depth increase.

结果表明，酸雨不仅使混凝土表面出现剥蚀、骨料外露，还使混凝土质量减小、强度降低、中性化深度加大。

Secondly, preparation of concrete with low-quality diabase and fine sand as aggregates and its basic performance are mainly studied through experiment.

本文结合实际工程，立足于降低工程所需混凝土配制成本和提高地产建筑材料的利用水平，对使用低品质辉绿岩和细砂配制系列混凝土进行了试验研究。

In order to decrease the unit cost of concrete and increase the utilization of local building material, this paper, dealing with practical projection, studies on preparation of concrete with low-quality diabase and green sand as aggregates through experiment.

本文结合实际工程，立足于降低工程所需混凝土配制成本和提高地产建筑材料的利用水平，对使用低品质辉绿岩和细砂配制系列混凝土进行了试验研究。

2SEBS-g-PAA (15). The DLS investigation showed that the aggregates have a rather broad hydrodynamic size distribution.

结果表明这是一类能够在水中形成丰富聚集体形貌的聚合物两亲体。

DRUSE minerals in the rock is fractured by the growth of many minerals or empty single cluster aggregates formed vigilance . They shared one end fixed to the base rock , the other side of freedom and good crystal growth firms .

矿物晶簇是指由生长在岩石的裂隙或空洞中的许多矿物单晶体所组成的簇状集合体，它们一端固定于共同的基地岩石上，另一端自由发育而具有良好的晶行。

If a disease has a genetic basis, it will occur in familial aggregates

如果一种疾病有遗传基础，它将以家族聚集性的方式发生。

Production of fire clay declined by 19.5% to 383,000 t valued at $5.97 million, with 88,200 t used in heavy clay products and lightweight aggregates (-12.7% compared to 2000) and 277,000 t used in firebrick, block, shapes and other refractories (-20.4%).

耐火粘土产量也下降至38.3万吨，比2000年下降了19.5%，产值约597万美元。其中有88200吨用于重粘土产品和轻质骨料生产（下降了12.7%），27.7万吨用于耐火砖，砌块，异形砖和其他耐火材料，下降20.4%。

SEM studies of all the three types demonstrate that this colloidal mineral is made up primarily of supermicroscopic low-carbonate fluorapatite aggregates, phosphate microframboids, and radiated fibrous apatite.

对不同矿石类型中胶磷矿做扫描电镜研究，得知胶磷矿主要由超微晶低碳氟磷灰石集合体、磷酸盐显微莓群以及纤维放射状磷灰石等构成。

Natural ginger tea is a kind of fruit-vegetable compound drink, and it aggregates natural, tasty, nutrient and hygienically, meeting the need of market.

天然姜茶饮料属果蔬复合饮料，其产品集天然、美味、营养、保健于一体，是适合市场前景需要的，发展势力强大。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。