Some Investigations of Nominal Compounds in Chemistry Papers written in English

从两个角度研究了标称化合物（NC）。1.我们比较了日本人和英语区化学家在无机化学论文中各章节的NC的使用频率。两个地区NC的使用频率大致相等，我们认为日本NC的使用是适当的。我们还检查了隐藏在NC中的表达。2.我们检索了英语区的化学家在《道尔顿学报》上发表的文章中出现频率较高的NC，然后利用PERC语料库对NC的使用进行了检验。我们发现，名词性词语的从属词多为单数形式，当“名词+名词”和“形容词+名词”取相同的意义时，前者具有限定意义的作用。

Nominal compounds (NCs) were studied from two points of view. 1. We compared the use frequency of NCs of each chapter of the articles that Japanese wrote in Inorganic Chemistry with those of the chemist from the English zone. The use frequency of NCs of both areas was approximately equal and we understood that the Japanese NCs use was appropriate. We examined also expression hidden in NCs. 2. We searched frequent appearance NCs used in the articles that the chemists of the English zone wrote in the Dalton Transactions, and then examined a use of NCs by PERC corpus. We find that the subordination word of NCs took the singular form, and that when "noun+noun" and "adjective+noun" took the same meaning, the former had a role to limit the meaning.