查询词典 temperature gradient

The simulation floating zone modelwith zero temperature gradient in the middle of the hot rod is proposed to simulate thehalf part of the full floating zone convection,since the temperature gradient in the middleof a full floating zone approaches zero.

根据加热方式的不同，可以将半浮区液桥分为通常半浮区液桥模型、模拟半浮区模型以及改型半浮区模型。通常半浮区液桥模型，液桥热端材料一般选择为金属材料，使得热端温度分布均匀。液桥产生热毛细对流时，在液桥热端内侧存在较大的轴向温度梯度。而在全浮区热毛细对流中，浮区中间的轴向温度梯度在对称条件下应该接近于零。

Relative positive temperature-gradient applicable for China is discussed, it proves that positive temperature-gradient can be expressed as exponential curve.

研究了我国公路桥梁混凝土箱梁的正温度梯度，证明其可以用指数函数来表达，并提出了本桥混凝土箱梁的正温度梯度指数函数表达式。

The expression of exponential curve is brought out to describe positive temperature-gradient of this bridge in this dissertation. Moreover, the relation of different factors to positive temperature-gradient is determined quantitatively.

根据计算研究结果，定量地确定了各影响因素与正温度梯度曲线的关系，证明了太阳辐射强度和日气温变化的幅值是影响混凝土箱梁正温度梯度的重要因素。

Intensity of solar radiation and height of haunch were found to be the main factors influencing the temperature gradient in box girder during cantilever construction, and function expression of the main factors with temperature gradient was gained.

从而验证了影响施工期间箱梁温度梯度的主要因素是太阳辐射强度和箱梁梗腋高度，定量确定了其与温度梯度之间的关系。

Two kinds of thermal residual stresses exist in metal matrix composites. One of them is temperature gradient induced thermal stresses caused by temperature gradient in MMC. The other can develop upon cooling from the processing temperature to room temperature due to the coefficient of thermal expasion mismatch between the fiber and matrix and is called CTE mismatch induced thermal stresses.

金属基复合材料有两种形式的热应力，一种是在MMC中由于温度梯度引起的热应力，即温度梯度诱导的热应力；另一种是在冷却过程中由于基体金属和纤维的热膨胀系数不匹配引起的热应力，即热膨胀系数不匹配诱导的热应力。

The frictional heat energy was concentrated on the thermal effect layer with the thickness of 4 mm, The temperature gradient of contact surface is the highest, and decreased rapidly with the radius direction of the lining's groove. The temperature gradient and TEL's thickness increased with the increasing of the sliding speed. The temperature decreased rapidly with the radius direction and also with the increasing of center angle of the lining's groove. The sliding speed and distance are obtained under two sliding conditions when the lining fails, which supply the theoretical basis with the antislip design of friction hoist.

摩擦热量集中在热影响表面层，其厚度仅为4mm，接触表面温度梯度最大，沿绳槽径向迅速减小；温度梯度和热影响表面层厚度随相对滑速的增大而增大；衬垫温度沿径向急剧降低且随圆心角增大而减小；并得到了2种滑动工况下衬垫失效时的相对滑速和滑动距离，为摩擦提升防滑设计提供理论依据。

It was shown that the area-averaged temperature profile also can not be obtained by means of a system with multi-laser sources in the unhomogeneous atmospheric surface layer.

标 签 折射温度梯度大气近地面层非均匀 refraction temperature gradient atmospheric surface layer unhomogeneous

Analyses of the EAWJ seasonal variation and the atmospheric meridional temperature gradient in the mid-upper troposphere indicate that the EAWJ center always corresponds to the largest meridional temperature gradient in the mid-upper troposphere, suggesting that the seasonal variation of EAWJ is a response to the meridional temperature difference.

分析急流与对流层中上层经向温度梯度的季节变化发现，急流出现的位置总是对应着经向温度梯度较大区域，急流中心有随气温南北差异大值中心移动的趋势，急流中心与最大温差中心相对应，表明急流中心的位置变化是对气温南北差异季节变化的响应。

The temperature gradient is larger in case ofussual half-zone model which has a uniform temperature distribution on the hot rod,andmodified half-zone model which has a non-uniform temperature distribution in the hotrod and negative radial temperature gradient near the axis of the hot rod.

模拟半浮区模型提出选择热传导系数与试验液体相当的材料作为热端棒材，使得热端内侧的轴向温度梯度接近于零。模拟半浮区模型的温度分布更接近于全浮区温度分布的一半。对于改型半浮区模型，选择热传导系数高于试验液体值一个数量级的材料作为热端棒材，使得热端温度分布不均匀，并且热端内侧温度高于外侧温度。

After comparing the measured and standard propose temperature gradient mode on temperature effect of the thin-wall and high-pier. We get a result that the inner forced is less influced by the effects of measured temperature gradient mode. This article has carried on linear stability analysis and nonlinear stability analysis of the bridge largest cantilever.

本文以试验研究为基础，测试了背景工程典型薄壁高墩结构在日照作用下的温度分布，并初步探索了薄壁高墩结构的温度梯度模式，比较了实测与规范建议的两种温度梯度模式对薄壁高墩结构产生的温度效应影响，结果表明实测温度梯度模式的温度效应对内力的影响比较小。

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％。