...块中演化出来的雾状气体是升华的冰。 什么是传热(heat transfer)? 为了理解传热的概念,我们必须首先理解热的概念。热能,或称热能,是系统内部能量的一种形式。热能是系统温度的原因。它是由于系统中分子的随机运动而发...
...ends on what you mean by colour. There are three fundamental modes of heat transfer for any material, and only one of them is directly affected by colour. Heat is transferred from the heat source to the heat sink, and from the heat sink to the air by conduction. Most heatsinks are made of copper (he...
...where a fluid is heated using a solid surface. For these cases, the heat transfer rate is given by, where is the surface area that heat is transferred through, is the temperature of the solid, is the temperature of air. is known as the convective heat transfer coefficient. This co...
...碰撞而传递热量的过程称为传导。 The ability of a material to transfer heat via conduction is characterised by its conductivity. The rate of heat transfer, or the heat current, between two objects having a temperature difference of is given by where and are the cross-sectio...
...n or a griddle. When the food is directly placed on the grill, the heat is transferred to the food through thermal radiation. The heat is not distributed evenly as the heat is only applied from below. 烤箱(oven)和烤架(grill)的区别 定义 烤箱是一个封闭的隔间,通常是炊具的一...
... 乙烯基内饰是许多人选择的家居装饰和汽车内饰。这种类型的室内装潢经久耐用,经常不褪色,如果保养得当,可以使用多年。如果你家里或车里有乙烯基内饰,这里有一...
... 乙烯基切割绘图仪,通常简称为绘图仪,是一种常用于标志制作的计算机设备。乙烯基字母机可以大也可以小,可以用来切割乙烯基标志文字和其他图形,制作从保险杠贴...
从棒球帽到T恤衫,从背包到酒杯,几乎当今社会的每一件物品都有某种设计。这两种...
... 在大多数情况下,使用湿布清洁乙烯基是可行的。乙烯基被用作很多东西的基本材料,比如塑料,因为它很坚固,不受大多数化学物质的影响。乙烯基用于食品包装、织物、室内装潢、墙纸、地砖、百叶...