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初中物理第一册(人教版)P.45在“压缩体积气体液化”的标题下写道:“现在许多地方使用的液化石油气,就是在普通温度下用压缩体积的办法,把石油气液化装在钢罐里的”.“将气体液化最大好处是使它体积缩小,便于贮存和运输”.第一册教师教学用书p.55关于压缩体积气体液化中指出,“不必引出临界温度概念.”本文想就这几个知识点谈谈有关问题.液化石油气是液化了的石油气的简称,液态石油气由丙烷(C_3H_8)、丁烷(C_4H_(10)、丙烯(C_3H_6)和丁烯(C_4H_8)为主要组成部分,又将含有三个和四个碳原子的碳氢化合物的气体统称为石油气.
Junior High School Physics Book One (PEP) P.45 writes under the heading “Liquid gas volume compression”: “Liquefied petroleum gas is now used in many places. Liquefaction in steel tanks. “The greatest benefit of liquefying gas is to make it smaller and easier to store and transport.” The first volume of the teacher’s book, p. 55, states that “the critical temperature concept does not have to be derived. ”This article would like to talk about these issues. liquefied petroleum gas is the abbreviation of liquefied petroleum gas. Liquid petroleum gas consists of propane (C_3H_8), butane (C_4H_ (10), propylene (C_3H_6) and D). The alkene (C_4H_8) is the main component, and the hydrocarbon gas containing three and four carbon atoms is collectively called the petroleum gas.