低温

By the theories of cavitations and free volume, it analyses the factors on lubricant low-temperature property in view of molecule structure, brings up effective ways to improve the low-temperature properties, conducts plenty of testing with even designs, and then investigates and tests the lubricant's low-temperature properties with computerized system; it analyses the data by regressi on method and optimizes the solving, and studies on the base oil of environment friendly lubricants and selects the composition of colza oil, esters and PAO2, and discusses on low-temperature flowability of vegetable-base lubricants.

应用空穴理论及自由体积理论，从分子结构角度分析了影响润滑油低温性能的因素，提出了改善对润滑油低温性能的有效途径，组织了大量试验，通过润滑油的计算机检测系统对润滑油的低温性能进行了分析检测，采用均匀设计来组织实验；用逐步回归对数据进行分析并且进行最优化求解，对环境兼容润滑油的基础油进行了分析研究，选择菜籽油、季戊四醇酯和聚α-烯烃作为基础油，并从理论上对植物基润滑油的低温流动性进行了探讨。

By the theories of cavitations and free volume, it analyses the factors on lubricant low-temperature property in view of molecule structure, brings up effective ways to improve the low-temperature properties, conducts plenty of testing with even designs, and then investigates and tests the lubricants low-temperature properties with computerized system; it analyses the data by regression method and optimizes the solving, and studies on the base oil of environment friendly lubricants and selects the composition of colza oil, esters and PAO2, and discusses on low-temperature flowability of vegetable-base lubricants.

应用空穴理论及自由体积理论，从分子结构角度分析了影响润滑油低温性能的因素，提出了改善对润滑油低温性能的有效途径，组织了大量试验，通过润滑油的计算机检测系统对润滑油的低温性能进行了分析检测，采用均匀设计来组织实验；用逐步回归对数据进行分析并且进行最优化求解，对环境兼容润滑油的基础油进行了分析研究，选择菜籽油、季戊四醇酯和聚α-烯烃作为基础油，并从理论上对植物基润滑油的低温流动性进行了探讨。

By the theories of cavitations and free volume, it analyses the factors on lubricant low-temperature property in view of molecule structure, brings up effective ways to improve the low-temperature properties, conducts plenty of testing with even designs, and then investigates and tests the lubricant's low-temperature properties with computerized system; it analyses the data by regression method and optimizes the solving, and studies on the base oil of environment friendly lubricants and selects the composition of colza oil, esters and PA02, and discusses on low-temperature flowability of vegetable-base lubricants.

应用空穴理论及自由体积理论，从分子结构角度分析了影响润滑油低温性能的因素，提出了改善对润滑油低温性能的有效途径，组织了大量试验，通过润滑油的计算机检测系统对润滑油的低温性能进行了分析检测，采用均匀设计来组织实验；用逐步回归对数据进行分析并且进行最优化求解，对环境兼容润滑油的基础油进行了分析研究，选择菜籽油、季戊四醇酯和聚α-烯烃作为基础油，并从理论上对植物基润滑油的低温流动性进行了探讨。

Two hundred 16-day-old of age commercial broiler chickens were randomly divided into 4 groups as follows: 50 birds were exposed to normal temperature (20℃) and peritoneally injected with normal saline as control group; 50 birds were exposed to low temperature (7-9℃) and peritoneally injected normal saline as low temperature group; 50 birds were exposed to low temperature and peritoneally injected with low dose BQ123 as low temperature low dose BQ123 group; 50 birds were exposed to low temperature and peritoneally injected high dose BQ123 as low temperature high dose BQ123 group.

本试验采用高选择性ETA受体拮抗剂BQ123预处理低温肉鸡，探讨ET在低温诱发AS模型的肺血管重塑和肺动脉高压发生发展中的作用。200只16日龄AA肉鸡随机均分为4组：常温(20℃)对照组、低温(7～9℃)对照组、低温低剂量BQ123组和低温高剂量BQ123组。23日龄、30日龄时进行肺动脉压的测定，肺组织取材、石蜡切片，Weigert间苯二酚复红染色。

Temperature, doping and electric field dependent parameters including energy band, impurity and carrier distribution, mobility and PN junction, etc are established The models which is demanded in unification and accordance in accurance, simulation speed, effective range and application efficiency are also obtained 3、Some unique or key low temperature physic effects, such as carrier freeze-out or trapping effect, mobility enhancement effect, steepened subthreshold effect, small dimension effect and heavy injection effect, as well as their influence to the device cryogenic performance are discussed and analyzed Based on the completely understanding of the physic nature and characteristics in low temperatures operation, the technique methods to overcome or to utilize the effects are also presented 4、By systematic analysis of carrier transportation, the device physic analytical model for advanced polysilicon emitter transistor with better cryogenic performance that can be used to simulate the quantity relations between device terminal characteristics and internal structure, doping distribution as well as operation conditions is presented.

建立了依赖于温度、掺杂和电场因子，并且包括材料和结构的各参量数学物理模型，主要包括能带、掺杂及载流子分布、迁移率和PN结等模型，在计算精度、速度、应用范围和使用效率等方面达到和谐统一。 3、深入研究了低温条件下一些特有的或起关键作用的低温物理效应，主要包括载流子冻析或陷阱效应、迁移率增强效应、亚阈性能改善效应、小尺寸效应和大注入效应等，并分析其对器件低温性能的影响，在对低温器件工作的物理本质和特点有深入认识和了解的基础上，找出利用或克服低温物理效应的技术措施。

The higher the concentration, the bigger the physiological index. 3. The Ether extract, the n-BuOH extract, the acetone and the chloroform extract treatment after chilling stress and restored the growth, the content of protein, the content of chlorophyll, SOD、POD and CAT activities were higher compared the control, the content of MDA was lower compared the control.

经前胡乙醚、正丁醇、丙酮和三氯甲烷提取物质喷雾处理的幼苗在低温处理36小时后，可溶性蛋白质含量、SOD、POD、CAT活性均下降，在低温处理恢复生长后，SOD、POD、CAT、可溶性蛋白和总叶绿素含量均比低温对照幼苗高，MDA含量比低温对照幼苗低；在低温处理后及恢复生长后各生理指标随浓度的增加呈现出先升高后降低的趋势。

The steps include selecting a mould, injecting low temperature hot melt materials, drying the low temperature hot melt material mould, taking out the low temperature hot melt material mould, coating with slurry and sand spraying, drying the sand mould, heating for allowing the low temperature hot melt materials to demould, casting and forming, destroying the sand mould, cutting and processing to obtain the finished product.

取一成型模具：该成型模具包括两个对合的半模，于成型模具内设有一螺旋转子的成型模穴及浇铸道；灌注低温热熔材：于浇铸道灌入熔融的液态低温热熔材，液态低温热熔材即填充于对合的两螺旋转子心轴模穴、及两转子螺旋部半模穴；干燥：液态低温热熔材干燥凝固，形成一具有螺旋转子外型的低温热熔材

I''d like to take the opportunity to thank you allI hope that we can cooperate sincerely, complement each other, realize double winscreate bright future together. Salt Spray test chamber\ sulfur dioxide hydrogen sulfide test chamber\ High temperature test chamber\ Low temperature test chamber\Highlow temperature test chamber\ Highlow temperature-humidity test chamber\ Highlow temperature alternating temperature humidity test chamber\ Desktop constant temperaturehumidity test chamber\ Constant temperaturehumidity test chamber\ Precise drying test chamber\ Vacuum drying chamber\ Highlow temperature shock test chamber\ Ultraviolet accelerated weatherometer\ Xeon lamp weather resistance test chamber\ Air ventilation climatic chamber\0zone climatic chamber\ Rustproof grease humidity test chamber\ Sanddust test chamber\ Box rain test chamber\ Pipe rain test device\ Drip box\ Alternating mould test chamber\ Salt-mist corrosion laboratory\ Salt-mist corrosion laboratory\ Large highlow temperature stepping into laboratory\ Temperature aging room\ Vacuum UV aging test chamber\ Mechanical test bed\ Computer control vibrating table\ Temperaturehumidityvibrating combined testing machine\ Instantaneous temperature test chamber

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Research on Keeping Quality of Different Flesh Types of Prunus persica L.Niu Liang, Wang Zhiqiang, Liu Shu'e, Song YinhuaAbstract: Effects of post-harvest cold storage and Modified Atmosphere Package on fruit hardness, weight losing and soluble solid content of different peach or nectarine varieties were investigated. The results showed that:(1) There were obviously differences of fruit hardness among varieties of different flesh types. In room temperature, FH of '24-30' and 'Zhongtao No.2' went down slower than 'Zhongyoutao No.5' and 'Zhongyoutao No.10'. In cold storage, '24-30', FH of Zongyoutao No.5' and 'Zhongyoutao No.10' descent quickly after 2 weeks of storage while that of 'Shuguang' and 'Zhongtao No.2' quickly descent just after storage.(2) MA package could effectively slow down the decreasing of FH. There were obvious differences among different varieties while 'Zhongyoutao No.10' was less sensitive than others.(3) Soluble solid content went down after harvest and the procedure was slower in lower temperature. In room, MA package seems accelerate the descendent of SSC.

采用不同肉质类型的桃、油桃果实为材料，对采后低温和自发气调包装等对果实硬度、失重和SSC含量等的变化进行了研究，结果表明：(1)不同类型桃、油桃采后果实硬度变化差异较大，常温下24-30和中桃2号果实硬度下降较慢，而中油桃5号、10号较快，在冷库低温条件下，24-30、中油桃5号和中油桃10号两周后硬度出现迅速下降，而曙光和中桃2号在贮藏后即迅速下降，带皮硬度与去皮硬度之间有一定差异，但变化趋势基本一致；(2)MA包装能有效地延缓采后桃、油桃果实硬度的降低，在常温及低温条件下均是如此，不同肉质类型间差异明显，曙光和中桃2号非常敏感，而中油桃10号则不太敏感，即MA包装对其果实硬度降低的延缓没有其它品种明显；(3)采后桃、油桃果实的SSC含量均有一定的降低，低温下该过程较慢，MA包装在常温下有加剧SSC下降的趋势，低温下则不明显，这可能与常温下采后立即进行MA包装不利于&田间热&及呼吸热的及时散发而加剧呼吸有关。

In the area of high technology of China, the developing technology of cryogenic thermodynamic process and heat transfer has resulted in the Shenzhou-V man-carrying space ship, Fengyun-III meteorological satellite and magnetic suspension train. Manufacturing of fuel (liquid hydrogen and liquid oxygen) of a cryogenic rocket, the cryocooler used to cool down infrared sensors, cryogenic-condensation vacuum pump used in manufacturing of semiconductors, super-conduct quantum interferometer and liquefied natural gas technology are all outcomes of the studies on cryogenic thermodynamic process and heat transfer. In these areas, there are many unexploited sub-areas. Therefore, cryogenic thermodynamic process and heat transfer is a developing study area, and is await more jobs by the younger generation.

在高科技领域，我国空间探索用&神州五号&载人飞船的成功发射、&风云三号&气象卫星的可靠运转以及磁悬浮列车技术等都与低温热力过程与传热技术的研究进展密切相关的，低温火箭发动机液氢液氧燃料的生产、红外传感器冷却的低温制冷机、半导体制造业用的低温冷凝真空泵、超导量子干涉仪与液化天然气的储运等技术都是低温热力过程与传热技术研究发展的产物，且有很多新技术有待于开发，是一个与时俱进、不断开拓的领域，有待于有志者去开发。

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。