查询词典 convection

I saw what appeared to be a small, swirling cloud of dark particles. It looked like a dust devil, one of those tiny tornado-like clusters that moved over the ground, spun by convection currents rising from the hot desert floor.

我还看到那种外形似小小的黑色微粒漩涡，就像尘卷风一样的不明物体，是类似微型龙卷风群中的一个穿过地面时，与炎热的沙漠地带气流旋在一起形成的。

AN IMPRESSIVE AREA OF DEEP CONVECTION HAS PERSISTED JUST WEST OF THE CENTER FOR 6 TO 12 HOURS.AND THIS PATTERN HAS YIELDED DVORAK CLASSIFICATIONS OF 2.0 FROM TAFB AND SAB...

令人印象深刻的地区深对流坚持西部中心6日至12 hours.and这种模式已取得德伏扎克的分类2.0从tafb和审计局。。。

It can enlarge the effective thermal area and make the in-case natural convection.

它可以扩大有效的散热面积，使在案件自然对流。

This paper is devoted to solving linear saddle point problems, Specifically, We consider nonsymmetric systems, written as usual in block form, where the upper left block is an invertible linear operator with positive definite symmetric part. Such saddle point problems arise, for example, in certain finite element and finite difference discretizations of NavierStokes equations, Oseen equations, and mixed finite element discretization of second order convection-diffusion problems.

中文题名求解鞍点问题的迭代方法副题名外文题名论文作者冯丽红导师曹志浩教授学科专业计算数学研究领域\研究方向学位级别博士学位授予单位复旦大学学位授予日期2002 论文页码总数87页关键词鞍点问题迭代方法网格离散线性方程组馆藏号BSLW /2003 /O241 /15 论文针对鞍点问题的求解分析了一些典型的快速算法。

In this paper, reconstruction is provided for two convection coefficients or corresponding nonlinear term from Dirichlet to Neumann map determined by the boundary measurements of the solution of the elliptic equation in the plane.

本文提供了由平面椭圆型方程解的边界性态所确定的Dirichlet-Neumann映射求解方程两个对流系数或相应的非线性项的方法。

With the help of finding the effects of the heat transfer process of building envelope on the indoor environment, solving the indoor flow field and temperature field, the heat convection coefficient of wall surface is obtained at last.

通过发掘建筑维护结构的传热过程对室内环境的作用与影响，求解室内速度场、温度场，从而得到墙体表面对流换热系数。

Based on the thermodynamic analysis of heat transfer process between water jet and the blade surface, the differential equations of heat convection and differential equation of steady heat conduction between water jet and the blade surface are established. Power expression of heat exchange and temperature field expression of the blade are derived.

根据对水射流与刀片间传热过程的热力学分析分别建立了水射流与刀片表面对流换热微分方程组和热源与刀片间的稳态导热微分方程，推导出水射流对刀片的换热功率表达式和刀片内温度场表达式。

This paper suggests the equivalence problem of natural convection heat transfer with vertical lay up flat in encapsulation cavities and gives theoretical proof as well.

提出了在封闭空腔内竖直平板自然对流换热的等价问题，并在理论上对其加以证明，同时通过流动可视化实验定性地验证了上述等价问题。

The results showed that erectness of coupling pattern between upper-layer jet and low jet and a divergence area, which came forth in right of upper-layer jet provide favorable surrounding conditions. The most intensive moisture convergence, the strongest ascending movement and the most instable convection stratification all occurred in the rainfall center. The rainstorm occurred at the warm and wet side of the negative value center of the moist potential vorticity and relative MPV, which had certain indicative significance for the forecast of rainstorm areas.

结果表明：高低空急流的优势配置，耦合形势的建立以及高空急流右侧的强辐散场的存在为暴雨的发生提供了有利的环境条件；暴雨区中上升运动和水汽辐合均大于周围区域，中低层为对流不稳定层结；暴雨区位于湿位涡和湿相对位涡负值中心附近偏暖湿气流一侧，对暴雨落区预报有一定的指示意义。

Pipeline stress calculation and Euler formula, as well as the theory of forced convection heat transfer in tube, are used to solve the problem of large deformation and uneven distribution of stress which occurred in thermal pipeline of a power plant.

通过应用管道应力计算方法、欧拉公式以及管内强制对流换热等传热学理论，解决了某电厂热力管道运行中出现的变形过大、应力分布不均的问题。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。