化学这门科学,来自欧美,在介绍名词定义等等方面,是难免有流弊的,如“Theory”这名词,译成“学说”者有之,译成“理论”者有之,而甚少精确的定义,遂使一般学化学的青年,以为化学上的学说,是一种假想:化学上的理论,是一种空谈。其实“学说”或“理 The science of chemistry, from Europe and the United States, is inevitable when it comes to the definition of nouns. For example, the term “Theory” is translated into “doctrine” and translated into “theory”, and rarely Precise definition, so that the general chemistry of youth, that chemical theory, is a hypothetical: chemical theory, is a kind of empty talk. In fact, “doctrine” or "reason