稀有元素在科学和技术中具有日益重要的意义。无机化学部门——稀有元素底化学——包括着现在已知百种元素中的大部分,并且是日益增多的稀有元素在我们伟大祖国国民经济中的科学研究和实际应用底广阔的原野。一向对我们国家抱着仇视的、为美国资本家服务的资产阶级学者,力求抹煞或减少俄罗斯和苏维埃科学家在科学和技术发展中的作用。许多现代资产阶级的科学家——美国资本主义的奴仆——甚至尽力设法轻视现代无机化学底天才创始人、伟大的俄罗斯科学家Д·И·门得雷业夫 Rare elements are of increasing importance in science and technology. Inorganic Chemistry - Rare Element Chemistry - Contains most of the hundred elements that are now known, and is the vast field of increasing scientific research and practical application of the rare elements in the national economy of our great motherland. The bourgeois scholars who have always hatreds in our country and serve the American capitalists seek to deny or reduce the role of Russian and Soviet scientists in the development of science and technology. Many modern-day bourgeois scientists, the slaves of American capitalism, even tried their best to underestimate the founder of the modern inorganic chemistry, the great Russian scientist Д И Манд Люд