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Experimental study on the metal surface cleaning agent re-oil preparation process of the series,Obtained by experiment the optimum cleaning process conditions:2g respectively SDBS,2g sodium silicate,2g sodium nitrite dissolved in 100 ml of distilled water,making the steel sheet coated with oil immersed in cleaning agents,under the conditions which keeping the washing temperature 30℃,Stirring rate of 2 files,Cleaning time for 5 min of the cleaning Cleaning the oil to achieve the highest rate of 99.62%,Corrosion rate can be controlled below 0.006%.

实验研究了金属表面重油污清洗剂制备的系列工艺，通过实验得出其最佳的清洗工艺条件：分别取2g十二烷基苯磺酸钠、 2g硅酸钠、2g亚硝酸钠溶于100毫升蒸馏水中，将涂有油污的钢片浸入清洗剂中，在清洗温度为30℃，搅拌速率为2档，清洗时间为5 min的条件下清洗，其油污清洗率最高能达到99.62%，腐蚀率能控制在？以下。

With the object of optimum bearing capacity and optimum working conditions, and under meeting reliability and certain conditions, the mathematical model of hydrodynamic lubricant radial journal bearing was established for reliability optimum design.

在满足可靠性及其他要求的条件下，以获得最佳承载能力与工作状态为目标，建立了流体动压润滑向心滑动轴承的可靠性优化设计数学模型，并列举了计算示例。

The determination of a plan "B" should conditions change, a plan for aborting a dive under untoward conditions, rescue plans in an emergency, briefings regarding emergency facilities on skiffs and the main boat, etc : these are all reasonable expectations when on a live aboard in my opinion, and I have experienced this previously.

有没有紧急时候的救援计划？有没有关于大船和小艇上的急救设施的简报？诸如此类的安排，在我心目中，是船宿必备的因素。而这些应变计划，我之前都有经历过。

The abnormal conditions currently recognized in Shelties are found in low numbers in the breed. Testing will allow these uncommon conditions to remain uncommon or even be eliminated from the breed.

这些试验将被允许在这些不太寻常的环境去留下不同寻常的结果，甚至将被取消从一般的饲养过程。

At first, the rought C〓F〓 mixed gases are obtained by pyrolysis process of R22. A experimental pyrolysis device is designed and made by ourself. The optimum operating conditions are offered in the paper. Secondly, the much efforts is on the synthesis of R134. After through the discussion of basic thermodynamics and kinetics, selecting and preparating catalyst, it is possible that the synthesis of R134 by pyrolyzed gases hydrogenation. Base on the character of catalytic process, the kinetics equation about C〓F〓 catalytic hydrogenation is established. The rate constant of the reaction is obtained through experiment data regression. In order to achieve higher yield of R134, some optimum technological conditions is determined.

论文首先对R22裂解制成四氟乙烯混合原料气的裂解过程进行了讨论，自行设计和制作裂解反应装置，并确定裂解反应的最佳操作条件；然后，重点对R134的合成进行基础研究，分别从热力学和动力学的角度探讨以含四氟乙烯的R22裂解混合气为原料合成R134这一全新工艺的可能性，选择和制备加氢催化剂，根据催化过程特点建立四氟乙烯催化加氢反应的总包动力学方程，并在此基础上自行设计和制作中试合成装置，获得了以裂解混合气为原料合成R134的最佳工艺条件，为R134的工业化生产提供了必要的理论依据和实验基础。

The experimental results show that the optimum conditions were as follows: molar ratio of pentaerythritol to phosphorus trichloride to bisphenol A was 1.0:2.8:2.0, the first and the second reaction held for about 3 h on the conditions of refluxing.

试验结果表明：反应溶剂为苯，用量为50 mL；物料配比〔m：m：m〕为1.0：2.8：2.0；第一步和第二步均回流反应3h。

Influences of the conditions, such as seed value of randomizer, the form parameter of statistical distributing function m, cell number, stress strain state, if there are weak areas in the center of specimens, limit conditions, random evaluating method of material factor on the elastic-plastic failure process of rock specimen are discussed.

分别研究随机数发生器种子值、统计分布函数的形态参数m、单元数目、应力应变状态、试样中心有无弱区、边界条件、材料参数随机赋值方式等条件对岩石试样弹塑性破裂过程的影响。

The temperature behavior in mats was measured using CopperConstantan Thermocouples, and the core temperature cure during both pressings was simulated by means of a computer under various conditions.Reflected-fluorescence microscopy and image analysis techniques were used to measure the flow and penetration of PF adhesive into the Polar flake under various steam-injection-vacuum-pressing conditions. The paper also studied the effects of adhesive and penetration on flakeboards'mechanical properties.

研究结果表明：采用聚合度较大的水溶性A阶酚醛树脂胶，可以比较有效地克服目前水溶性酚醛树脂胶喷蒸热压大片刨花板中的树脂胶过度稀释、渗透及胶线缺胶的问题；适当选择饱和蒸汽压力、喷蒸时机、喷蒸时间、蒸汽保持时间和抽真空处理程度，是解决目前水溶性A阶酚醛树脂胶在喷蒸热压中所存在的问题的另一个重要途径。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法，即预先混合聚合物与填料制备复合物，复合物在沥青中会吸收油份而溶胀，改变填料的用量从而调节聚合物与沥青的密度差异的方法，制备出高温贮存稳定的改性沥青，并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响，系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响，研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青，并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用，指出经过预混工艺填料改变了聚合物与沥青的密度差异，以此说明聚合物/填料改性沥青高温贮存稳定的原因；研究了基质沥青和聚合物改性沥青热氧老化过程，并分析了抗氧剂对基质沥青及聚合物改性沥青的影响，探讨了抗氧剂提高沥青耐老化性能的原因。

The polecats were not sensitive to variable food under starvation conditions. This was due to the fact that the polecats had low levels of energy metabolism and they conserved energy by decreasing their activity to increase their survival under starvation conditions.

产生这种结果的主要原因可能是艾虎的能量代谢水平较低，在食物受到限制时主要采用降低活动使单位活动时间内所获得的能量值达到最大的取食对策增加自身的存活机率。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。