The meaning of this paper is a brief statement of the contents of the paper, without comments and annotations, and it requires a brief description of the purpose, research methods and final conclusions of the research work. It reads as follows:

1. What we want to discuss here is mainly the English abstracts attached to Chinese scientific papers, including titles, abstracts and keywords. GB 77 13-87 stipulates that scientific and technological reports, dissertations and academic papers of international exchanges should be accompanied by foreign language abstracts. In principle, the above precautions in writing Chinese abstracts are all applicable to English abstracts, but English has its own expressions and language habits, so special attention should be paid when writing English abstracts.

2. The structure of the title. Phrases are the main forms of English titles, especially noun phrases, that is, titles are basically composed of 1 nouns and their pre-and post-attributes For example, bryophytes that often appear in Helan Mountain area are familiar bryophytes.

3. Thermodynamic characteristics of water absorption of heat-treated wood. The title of phrase type should determine the head word and then modify it before and after. The order of each word is very important, and improper word order will lead to inaccurate expression. Generally speaking, the title should not be a declarative sentence, because the title mainly plays a marking role, and declarative sentences easily make the title have judgment semantics.

4. Besides, the statements are not concise and eye-catching, and the key points are not easy to stand out. In a few cases, the question can be used as the title, because the question can have an exploratory tone and easily arouse the reader's interest. For example, can agricultural mechanization be realized without oil? Can agricultural mechanization be separated from oil?

5. The number of words in the title. The title should not be too long. Foreign sci-tech journals generally limit the number of words in titles. For example, the American Medical Association stipulates that the title should not exceed 2 lines and each line should not exceed 42 printed symbols and spaces; J Nat Cancer Inst, a magazine of the National Cancer Institute, requires that the title should not exceed 14 words; The British Mathematical Society requires that the topic should not exceed 12 words.