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At the same time, the paper also researches the influence of valve parameters to performance and noise of shock absorber.

同时，论文以029A型减振器为研究对象，在减振器参数化非线性动力学模型的基础上，分析了减振器阀门结构对减振器性能的影响，并提出了一些试探性的改进。

Based on Prandtl's momentum transportation, this paper calculates in detail the physical quantities such as eddy viscosities, and ratio of eddy viscosity to motion viscosity, total stresses with respect to relative position in three regions of viscous sub-layer, buffer layer, and main turbulent stream for non-Newtonian fluid flowing turbulently in ducts, which according to Karman's three layer models and measurement of fluid parameters in evaluation apparatus, discusses the influence of polymer drag reduction on flowing properties of non-Newton fluid, analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate.

摘要以普兰德动量传递理论为基础，按照卡门的三层模型，通过室内模拟环道用0号柴油及加入减阻剂在圆管内的流动参数的测定，计算了非牛顿型流体管内湍流边界层的层流内层、过渡层、湍流中心的涡流粘度，涡流粘度与运动粘度比、总应力随相对位置的变化等定量参数，探讨了高分子减阻剂对非牛顿流体流动特性的影响，对湍流减阻现象的机理与增大减阻率的条件进行了定量分析。

The salinity reduction on the leeward side of the round mound reached 50%, and was 60% for the leeward side of the slender mound. Therefore, salt reduction showed better performance compared with wind velocity reduction. The salinity observed at the wind gap decreased with the increasing of distance from wind gap, but between round and slender mounds, no significant difference was detected.

在减盐效果方面，圆形与细长形土堤背风面平均减盐效果达50%至60%，两者之减盐效果皆优於减风效果；再者，圆形与细长形土堤中间之风口处，盐分量随距离增加而递减，然而差异并不明显。

Naphthalene superplasticizer compared with other second-generation, third-generation POLYCARBOXYLIC superplasticizer With the improvement of quality of performance and quality.

与萘系等第二代减水剂相比，第三代聚羧酸系高效减水剂的性能与质量有了质的提高，基本能够满足高性能混凝土对减水剂的性能要求，该类产品基本具备了取代萘系减水剂的技术性能优势与经济条件。

Naphthalene superplasticizer compared with other second-generation, thellord-generation POLYCARBOXYLIC superplasticizer With the improvement of quality of performance and quality.

与萘系品级二代减水剂比拟，第三代聚羧酸系高效减水剂的机能与质量有了质的提高，基本能够餍足高机能混凝土对于减水剂的机能要求，该类产物基本具有了代替萘系减水剂的技术机能优势与经济前提。

The main categories are: naphthalene series water reducer, high-performance polycarboxylate superplasticizer, Sulphamate superplasticizer, fat-type superplasticizer.

主要类别有：萘系减水剂、聚羧酸高性能减水剂、氨基磺酸盐减水剂、脂肪类减水剂。

Adhesive has environmentally-friendly products are mainly urea-formaldehyde resin, melamine urea-formaldehyde resin and modified phenolic resin; concrete water reducer products are mainly water-reducing agent has Sulphamate, polycarboxylate water reducer and superplasticizer melamine.

胶粘剂产品主要有环保型脲醛树脂、三聚氰胺改性脲醛树脂和酚醛树脂；混凝土减水剂产品主要有氨基磺酸盐减水剂、聚羧酸减水剂和三聚氰胺减水剂。

Production and sales companies are the main FDN series naphthalene superplasticizer, water reducer Sulphamate series, aliphatic superplasticizer, various models of efficient retarding superplasticizer, pumping agent, selling all types of expansion agent, retarder, calcium lignosulfonate, wood sodium, sodium, such as glucose.

公司现主要生产销售FDN系列萘系高效减水剂、氨基磺酸盐系列减水剂、脂肪族系高效减水剂、各种型号的高效缓凝减水剂、泵送剂、销售各类膨胀剂、缓凝剂、木钙、木钠、葡萄糖酸钠等。

Conventional imaging technique which unsubtracted bone was used first,use 3D treatment on workstation to reconstruct cerebral vessels,to diagnose aneurysm,vascular malformation and tumor as well as to evaluate the preoperative and postoperative efficacy.Subtract bone techniques including one by one slice subtraction,semi-automatic digital subtraction radiography,matched mask bone elimination and control tube exposure light spot imaging technique can show the vessels more clear without the interference of bone as well as the relationship between vessel and pathological changes more accuracy.

首先是未去骨的常规成像技术，利用工作站进行多平面重建技术、最大密度投影、容积再现、表面遮盖法等多种三维处理得到头部血管及肿瘤图像，对动脉瘤、血管畸形及肿瘤血管进行病变诊断及术前、术后评价；其次是近年出现的逐层减影、半自动数字减影、匹配蒙片骨去除法及控制球管曝光点的减影等去除颅骨的减影技术，没有颅骨的干扰血管显示更加清楚，血管与病变关系显示更准确。

Research results indicate that X FLOUR has notable effects of fluidizing and water reducing.

研究结果表明：X粉具有显著的流化与减水效应，其流化与减水效果与目前市售掺合料的最高水平相当，明显好于硅灰。X粉与硅灰复合后，仍具有流化效应。X粉产生流化效应的机理，一是增加水泥浆悬浮体系的分散性；二是通过填充效应减少填隙水，增加了用于混凝土流动性的水量；三是增加混凝土混合料的浆体体积。X粉流化与减水效应的发挥，以与高效减水剂双掺为前提。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。