查询词典 in low spirits

Methods Eighty Kunming mice were equally randomized into 8 groups: normal group, model group, vitamin E 90 mgkg^(-1d^(-1) group, high-and low-dose RPM protein 20 and 5 mgkg^(-1d^(-1)respectively groups, high-and low-dose RPM anthraquinone glycoside 28 and 7 mgkg^(-1d^(-1) respectively groups, combination (low-dose RPM protein and low-dose RPM anthraquinone glycosides) group. Except the normal group, the mice in other groups received subcutaneous injection of D-galactose to indue the aging model.

选用昆明种小鼠80只，随机分为8组：正常组，模型组，维生素E组（剂量为90mgkg^(-1)d^(-1)），何首乌蛋白质高、低剂量组（剂量分别为20、5mgkg^(-1)d^(-1)），何首乌蒽醌苷高、低剂量组（剂量分别为28、7mg kg^(-1)d^(-1)），AGRPM与PRPM混合组（混合组，均取两者低剂量）；除正常组外，其他组均采用长期（7周）皮下注射D-半乳糖复制衰老小鼠模型。

The thesis introduces the general engine development, domestic and foreign, analyses the present situation and future development trend of environment friendly lubricants, studies on theories of flow activation and low-temperature jellification which well illustrate the low-temperature property of environment friendly lubricants, researches the low-temperature flowability of environment friendly lubricants in perspective of molecule, then theoretically synthesizes plastic and flow principles of environment friendly lubricants and finally reaches a ground to explain low-temperature properties of environment friendly lubricants.

本文论述了国内外内燃机油的发展概况，分析了环境兼容润滑油的发展现状及趋势，研究了可以用于解释环境兼容润滑油低温性能的流动活化理论和低温成胶理论，从分子的角度研究了环境兼容润滑油低温流变特性，对润滑油的粘塑性流变机理进行了理论推导，找出了解释环境兼容润滑油低温流变特性的根据。

The flow field construct of meso-β cloud clusters which bring the heavy-hard rainfall in northeast plateau is that the low level cloud cluster is located in the south of converging region, the southern low level influx converged in the cloud cluster and have some affection on the setting up of the rainstorm in the low level. In the middle level, the cloud cluster is lied in near the westerly trough and the southwest airflow ahead of the trough constantly transmits water vapor to the cloud cluster. In the high level, there are a pair of high and low pressure centers around cloud clusters and are obvious divergence airflow, and there is weak ageostrophic high level outflux along pressure force.

产生高原东北部地区大到暴雨天气过程的中—β尺度云团的流场结构特征是：在低层，云团位于辐合区的南部，低层的偏南低空入流在云团内辐合，对大到暴雨的形成有一定的作用；在中层，云团位于西风带低槽附近，槽前的西南气流不断地给云团输送水汽；在高层，云团附近有一对高、低压中心，为明显的辐散气流，沿气压梯度力方向有强度不强的非地转高空出流。

The high impedance line part is disposed between the first low impedance line and the second low impedance line, and the input end and output terminal are asymmetrically arranged both sides of a syntonizer composed of the high impedance line, the first low impedance line as well as the second low impedance line.

高阻抗线部分设置于第一低阻抗线与第二低阻抗线之间，且输入端与输出端非对称设置于高阻抗线与第一低阻抗线以及第二低阻抗线所组成的谐振器的两边。

Three types of base asphalt and six SBS were used to produce SBS modified asphalt. The interaction of SBS modified asphalt was discussed in different states between the base asphalt and SBS based on their compositions. Through the traditional tests, such as penetration, soften point and ductility, and US SHRP tests, the results indicated that influences to affect the temperature susceptibility, high and low temperature performance, aging characteristics are base asphalt, SBS types and their dosages. The functions of penetration to viscosity and complex shear modulus G~* to complex dynamic shear viscosity η~* were set up, and then theviscosity-temperature susceptibility of wide temperature span and the calculation method of low temperature viscosity were obtained."Process" evaluation criterions, high grading critical temperature T_ and low grading criticaltemperature T_ , were suggested according to the high and low temperatureperformances of SBS modified asphalt. Using the experience of Repeated Creep and Recovery Test for Binders, a new high-temperature evaluation index,modification rutting factor G~*~(-9) was obtained. The results after RTFO and PAV aging indicated that traditional tests didnt differentiate base asphalt and SBS modified asphalt, but dynamic mechanics temperature spectrum and G*-5 black chart clearly reflected the influence of aging to the SBS modified asphalt. With the IR and GPC tests, the reason of aging to the SBS modified asphalt were due to asphalt phase oxygenated and SBS phase depredated.

论文选择3种油源的基质沥青和6种SBS改性剂制备改性沥青，通过分析基质沥青和SBS改性剂的组成结构特点，得出了不同状态下SBS改性沥青的SBS与基质沥青的相互作用机理；通过针入度、软化点、延度等常规试验以及美国SHRP试验，分析了基质沥青、SBS改性剂类型与剂量对SBS改性沥青的温度敏感性、高低温特性及老化特性的影响；建立了针入度-粘度、复数模量G~*-复数粘度η~*的换算关系，得出了宽温度域的粘温指数VTS和较低温度下粘度的计算方法；通过高低温性能分析提出了&过程&评价参数高温等级温度T_和低温等级温度T_；借鉴重复恢复与蠕变试验研究成果，得到了SBS改性沥青高温评价指标改进型抗车辙因子G~*~(-9)；RTFO和PAV老化后的性能试验结果表明，常规试验难以区分SBS改性沥青与基质沥青的差异，而动态力学温度谱、G~*-δ黑斑图可以反映老化作用对SBS改性沥青的影响，且通过IR试验和GPC试验得出SBS改性沥青老化是沥青相的氧化和SBS的降解共同引起的；通过不同温度下SBS改性沥青混合料的旋转压实SGC试验，根据粘度与剪变率的关系，提出用剪变率60(1／s)测试SBS改性沥青的粘温曲线，并按照0.17±0.02Pa.s和0.28±0.03Pa.s确定施工温度。

IEEE802.15.4 is a new standard uniquely designed for low rate wireless personal area networks.It targets low data rate,low power consumption and low cost wireless networking.The energy-efficiency and robustness of this new standard makes it a strong candidate to be a federating communication protocol for wireless sensor networks.

IEEE802.15.4作为一种专为低速率无线个人区域网络(low data rate-wireless personal areanetwork，LR-WPAN)而设计的低成本、低功耗的短距离无线通信新标准，为无线传感器网络提供了一种很好的解决方案。

A semiconductor device including a high voltage element and a low voltage element, including: a semiconductor substrate having high voltage element region where the high voltage element is formed, and a low voltage element region where the low voltage element is formed; a first LOCOS isolation structure disposed in the high voltage element region; and a second LOCOS isolation structure disposed in the low voltage element region, wherein the first LOCOS isolation structure includes a LOCOS oxide film formed on a surface of the semiconductor substrate and a CVD oxide film formed on the LOCOS oxide film, and the second LOCOS isolation structure includes a LOCOS oxide film.

提供一种在确保高耐压元件的高耐压特性的同时使高耐压元件和低耐压元件具有良好特性的半导体装置。具有高耐压元件和低耐压元件的半导体装置包含：规定了形成高耐压元件的高耐压元件区和形成低耐压元件的低耐压元件区的半导体衬底；在该高耐压元件区设置的第一LOCOS隔离结构；以及在该低耐压元件区设置的第二LOCOS隔离结构。第一LOCOS隔离结构由在该半导体衬底的表面上形成的LOCOS氧化膜和其上形成的CVD氧化膜构成，第二LOCOS隔离结构由LOCOS氧化膜构成。

Experiment studied the possibility of substituting Portland cement for alumina cement to make low cement castable refactory. The results indicated that Portland cement may definitely substitute the alumina cement to make low cement castable with good performance, within the scope of low cement content of the modern low cement castable system.

试验研究了硅酸盐水泥替代矾土水泥制造低水泥耐火浇注料的可能性，结果表明在低水泥掺量的现代低水泥耐火浇注料体系中，硅酸盐水泥完全可以替代矾土水泥配制性能良好的低水泥耐火浇注料。

Measures of improving for low temperature toughness by selecting the welding materials and strictly controlling the welding process for welded joints of low temperature low-alloy steel, nickel alloy steel and chrome-nickel austenitic stainless steel for low temperature pressure vessels were summed up.

为了改善工作于低温环境的压力容器用低合金低温钢、镍合金钢和铬镍奥氏体不锈钢的焊接接头低温韧性，而采取改进焊接材料、严格控制焊接工艺的措施。

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

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。