对流

Studies formation of the natural convection for different initial water temperature (higher or lower than the point of density inversion) and their effects on the ice layer increasing.

调查了在高于或低于密度逆转温度点的不同初始温度下自然对流形成的情况，及其对水平叠置恒壁温三圆管外冰层形成过程的影响。

If we consider that there is only convection, when the absolute pressure of ambient is 0.02Mpa, the theoretical value of inversion temperature is approximate to 90℃, and the experimental value, however, is 80℃~85℃.

在仅有对流换热的条件下，当环境绝对压力为0.02MPa时，&逆转温度&的理论值为90℃左右，试验值在80℃～85℃之间。

His paper studied inversion method of ground temperature field and ground temperature gradient field based on 3D static heat conduction theory.

研究了基于三维稳态热传导理论并忽略对流换热及地质构造等次要因素影响的地温场与地温梯度场的反演方法。

The acid anhydride is firstly isomerized and esterified with castor oil on 12-hydroxyl of eastor oil acid to improve the rheological and tribological characteristic.

详细考察了合成酯和植物油的烷链结构对流变性能和摩擦特性的影响。

Heat transfer will worsen if structure parameters of the spring inserts are not fit. The paper think that the mechanism of heat transfer enhances of the spring inserts is the laminar flow lining is thinner because of librating of the spring inserts, accordingly the part of convection is enhanced. But the part of boil is not influenced.

通过弹簧插入物的各个参数对传热性能的影响分析，认为弹簧插入物对竖管降膜蒸发传热强化的机理主要是弹簧的振动加强了液膜的湍动，减薄了层流内层，从而强化了对流传热分量，但对沸腾传热分量没有影响。

The influence of different convection heat transfer coefficient on the temperature effects of concrete structure,take mid-span deflection and axial deformation of the beam as examples,was discussed.

本文综合分析国内外学者的研究成果，提出了混凝土对流换热系数计算公式，可用于混凝土结构温度效应分析。

Rototherm Ovens, Multideck Ovens, Mini Convection Ovens, Long Moulders, Volumetric Dough Dividers, Intermediate Provers, Conical Rounders, Automatic Spiral Mixer with Fixed Bowl, Tray Trolley, Climator Unit, Pallet Trolley, baking pans, and developing compact milling systems capacity between 24mt / day and 110mt / day we turn wheat to bread.

烤炉，微波炉，迷你对流烤炉，龙注塑，体积面团隔板，中间圆锥，自动螺旋式调音台，配有固定碗，托盘车，股，托盘车，烘盘，发展紧凑铣削系统能力之间24mt /天，并110mt /天，我们来看看小麦面包。

The convection term in turbulence equations is discretized using first-order upwinding scheme to ensure more stability in time integration and the positivity of the turbulent variables.

对湍流方程中的对流项，则采用一阶逆风格式离散，以进一步保证时间推进的稳定性和湍流变量的正值性。

Whereas the seismic thermal lithosphere is about 150km thick, which means the Tarim lithosphere is not steady and became thinner. In this paper, writers analyzed the Tarim lithosphere thinning mechanism based on the tectonic thermal evolution quantitative method, and discussed three possibilities:the hotter India asthenosphere intruded under the Tarim lithosphere and made the Tarim lithosphere became unsteady;the bottom of Tarim lithosphere is heated by friction of the atheonosphere flow and washed off by the hot asthenosphere; the Xizang lithosphere delamination induced the convection, and the upflowing mentle heated the bottom of the Tarim lithosphere and make it enthinning.

本文利用构造热演化方法对塔里木岩石圈减薄的热演化过程进行了定量分析，探讨了塔里木盆地岩石圈减薄可能的三种机制：印度板块与欧亚板块碰撞后青藏高原岩石圈底部的软流圈较塔里木盆地岩石圈底部的软流圈的温度要高，青藏高原的软流圈地幔向塔里木盆地岩石圈底部侵入形成的热扰动使得塔里木盆地岩石圈底部的温度升高；塔里木岩石圈与其下流动的软流圈的摩擦剪切生热导致其岩石圈地幔底部温度升高，使得岩石圈底部发生热侵蚀，从而使得与软流圈接触的岩石圈地幔不断地加入到软流圈地幔；在塔里木盆地岩石圈的下部，青藏高原的岩石圈在该处发生了拆沉，从而诱发的软流圈地幔对流，上升的软流圈地幔流使得岩石圈地幔的温度升高而熔融，成为软流圈地幔。

Moreover, the complete nine-point scheme for 2D convection-diffusion equation was developed.

在此基础上，提出二维对流扩散方程完全9点格式，可用于任意曲线坐标网格。

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％。