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世界上的各种物体,尽管它们千姿百态,但它们都是由人们迄今为止所知的一百多种元素的分子组成的。俗话讲铁板一块,其实各种金属的分子组成中,彼此间还是有着2°～4°左右的晶格存在。从真空技术的角度看,世界上不存在绝对不漏的物体,即使微小的气体分子,它们还是有着和上述晶格几乎相当的不同的直径,由于分子的自由运动,电场运动以及物理化学诸多的因素制约,气体分子不可能径直的穿透物体,达不到我们概念中的漏孔那种程度,从而使我们人为的能获得超高乃至极高真空,但从中可以想象得出,真空度不可能无
The various objects of the world, despite their diversity, are made up of more than a hundred elements of molecules that people have known so far. As the saying goes iron plate, in fact, a variety of metal molecules, each other still has a 2 ° ~ 4 ° lattice existence. From the perspective of vacuum technology, there are no absolutely leaky objects in the world. Even tiny gas molecules have almost the same diameter as the above crystal lattice. Due to the free movement of molecules, electric field motion and many physicochemical Factor constraints, the gas molecules can not penetrate the object straight to the extent that we can not reach the level of leaks in the concept, so that we can get artificially high or very high vacuum, but it can be imagined that the degree of vacuum is not May not