性能

Three main environmental factors——traffic,rainfall,temperature,which can lead to the direct change of pavement performance are used as the input layer of neural network.The performance indexes of asphaltum concrete pavement,i.e.dilapidation rate,smoothness,deflection,friction coefficient are used as output layer.The relation between environment factor and pavement performance is acquired by introducing the module of BP Neural Network in MATLAB.

阐述了应用BP神经网络进行沥青混凝土路面使用性能预测的可行性，以环境因素，即交通量、降雨量、温度等3个直接使路面性能发生变化的主要因素作为BP神经网络的输入层，以沥青混凝土路面的破损率、平整度、弯沉值、摩擦系数等4项性能指标作为输出层，采用MATLAB语言中的BP神经网络模块进行自学习，得出环境因素与路面使用性能之间的关系。

The results indicate that the effect of alloying elements V and Cr on mechanical properties at room-temperature, creep behavior and microstructures are similar. With increasing contents of V and Cr, their mechanical properties produce little change, the creep resistant property decreases and microstructure grows, which is mainly due to their characteristics of β-stability element and smaller atomic radius compared with Ti. On the contrary, the effects of V and Cr on the thermal stability are quite different. With increasing V content or decreasing Cr content the thermal stability for the alloy becomes better, which may be due to the different solution characteristics of V and Cr element in titanium alloy that V belongs to isomorphous β-stability element and Cr belongs to eutectoid β-stability element.

结果表明：合金元素V和Cr对Ti40合金室温力学性能、蠕变行为和组织的影响具有相似性，即随V和Cr含量的降低，合金室温综合力学性能变化不明显、抗蠕变能力减弱、组织粗化：这与V和Cr同属于β稳定元素、且原子半径都小于Ti原子有关；而V和Cr对于热稳定性能的影响则完全相反，V含量的增加或Cr含量的降低含金热稳定性能优化，其主要原因可能与V属于同品型β稳定元素而Cr属于共析型β稳定元素有关。

Has good shear stability to ensure long-term use of non-rejection grease, outstanding low performance, can be maintained normal use under the condition of cold environment ,excellent performance rubber compatible, be able to maintain lasting performance and quality performance of brake cylinder.

具有良好的剪切安定性，确保长期使用中不甩脂；突出的低温性能，在极寒情况下能保持正常使用；优良的橡胶相容性能，能够保持制动缸橡胶皮碗的耐寒持久性能和质量性能。

Alkoxyhydroxylpropylchitooligosaccharide and quaternary ammo-nium-hydroxylpropylchitooligosaccharide possess certain emulsifying property, good hygroscopicity and humidity-retaining ability;the former also possesses good compatibleness, the latter also possesses good generating and stabilizing foam ability.

烷氧基羟丙基甲壳低聚糖和季铵基羟丙基甲壳低聚糖具有一定的乳化性能和良好的吸湿保湿性能；而且前者的配伍性能良好，后者表现出优良的泡沫性能。

At last through at traditional Marshall design method and Superpave pitch that method compound mix material carry on way compares with and analyses with performance, The result shows , adopt and mix thick, detailed piling up and inlay lock cooperate withpitch who proportion compound mix material have high temperature stability and impervious swimming skill can a good one relatively by ore material that characteristic choose according to one, its surface is coarse, and it is better to resist slippery performance.

通过与传统马歇尔方法和Superpave方法设计的矿料级配在其最佳油石比时的物理力学性能对比分析，发现采用本文提出的设计理论和方法所配制的沥青混合料具有良好的抗高温车辙性能、抗渗水性能以及抗滑性能，而且该方法具有工作量小，在实际工程中易于操作等优点，可以广泛应用于我国高等级公路工程建设。

The results showed that with increasing of FeS content,both the density and conductivity of composite were reduced,the hardness was increased and the microstructures were homogenized.When FeS content was less than 15% and more than 10%,the hardness of composite was conformably in this section.

FeS颗粒弥散强化Cu基复合材料是一类具有优异性能的新型功能材料，它具有高强度、高耐磨性、抗高温软化能力优良等综合物理性能和力学性能，同时兼顾了Cu的传导性，这与FeS的性能特征紧密相关。

Common quenching oil is loss of whole system of N32 or N22 uses oil, cool to raise its function, fight aging behavior, shining function and divide into equal parts of high temperature capability to be not joined urge cryogen, clear lotion, brightening agent and antioxidant, formed fast oil, fast and shining oil and high temperature to classification the series quenching oil such as isothermal oi......

普通的淬火油是N32或N22全系统损耗用油，为提高其冷却性能、抗老化性能、光亮性能和高温性能等分别加入催冷剂、清洗剂、光亮剂和抗氧化剂，形成了快速油、快速光亮油和高温。。。。。。

Secondly, the methods of control performance assessment based on the minimum variance control are emphasized. The simulation of the power plant deaerator level control system shows that it is very useful method to monitor the condition of the control loops.

接着，着重介绍了基于最小方差的控制系统性能评价方法，并对某电厂除氧器水位控制系统进行了性能评价研究，结果表明，这种性能评价方法对实际控制回路性能的监测具有重要的指导意义。

The macroscopic hardness, microscopic hardness, tensile capability and press capability of fine grain samples were tested. In addition, the ultra fine grain material''s thermo-stability, mechanical capability and dilatability were studied.

分析了所得到的细晶材料的外观形貌、金相组织和透射电镜形态，测量了细晶材料的微观和宏观硬度、拉伸性能、压缩性能，并研究了超细晶材料的热稳定性、力学性能和热膨胀性能。

The performances of modified asphalt with different contents of Indonesian Buton Rock Asphalt and Esso based dasphalt A-70 are studied with the experiments. The results show that the capacity of anti-deforming and the performances of temperature sensibility, in high temperature or low temperature are improved as the contents of BRA increase.

以埃索70沥青作为基质沥青，对不同掺量的印尼布敦岩沥青改性沥青的性能进行了研究，试验结果表明，随着岩沥青掺量的增加，改性沥青的抗变形能力、感温性能、高温性能和低温性能得到提高。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。