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这篇短文的作者,是一位青年工人,今年二十岁。他在组织上和老同志的帮助、影响下,几年来勤奋学习,刻苦钻研,已先后学会了线路测量、施工预算和一般的结构设计。他干一行,爱一行,钻一行,是爱科学、学科学的好青年。近年来,他又带着探索建筑结构的裂缝问题,开始接触断裂力学。他通过报刊、资料等渠道,比较熟习国内断裂力学的研究动向、水平和成果。这篇短文,就是他学习断裂力学的一份读书笔记,明确、简练地阐明了断裂力学的几个基本概念。其中,在某些细节上,他还大胆地提出新的见解,显示了他本人的思想的活跃程度。发表这篇短文的目的,是为了普及断裂力学。然而,更重要的是想通过这篇短文来说明,在英明领袖华主席发出向科学技术现代化进军的号召之后,青年一代的精神面貌已经发生了多么大的变化。他们痛绝愚昧和无知,懂得知识就是力量,懂得科学需要社会主义、社会主义需要科学的真理,奋发图强,正在学习和工作中茁壮成长。
The author of this essay is a young worker who is twenty years old this year. Under the influence of his organization and old comrades, he has worked diligently for several years and studied assiduously. He has learned circuit measurement, construction budget and general structural design. He is a good young man who loves science and studies science. In recent years, he has also begun to contact fracture mechanics with the exploration of cracks in building structures. Through newspapers, data, and other channels, he is familiar with the research trends, levels, and achievements of domestic fracture mechanics. This essay is a study note for him to learn fracture mechanics. He clearly and concisely explains several basic concepts of fracture mechanics. Among them, in some details, he boldly put forward new insights, showing how active his own ideas are. The purpose of publishing this essay is to popularize fracture mechanics. However, what is more important is to use this brief article to explain how great changes have taken place in the mental outlook of the young generation after President Ying Wing’s president issued a call to advance into the modernization of science and technology. They are ignorant of ignorance and ignorance, knowing that knowledge is power, knowing that science needs socialism, that socialism needs scientific truth, and that it is striving to be strong, and is thriving in learning and work.