最近,美国在许多金属喷镀,切割和熔化操作中采用了一种新的高效率的热源——电弧等离子气体燃烧咀(见图)。这种燃燒咀能保证获得很高的温度(达16500℃),在此种温度下所有元素都被汽化。物理学家认为,等离子气体是第四种状态的物质(在气体、液体和固体之后)。它是一种不受气体定理约束的 Recently, the United States has adopted a new high-efficiency heat source, an arc plasma gas burner, in many metallization, cutting and melting operations (see photo). This burner ensures a very high temperature (up to 16,500 ° C), at which point all the elements are vaporized. Physicists believe that plasma gas is the fourth state of matter (after gases, liquids, and solids). It’s a gas-free theorem