(元素)、periodic table(元素周期表)、atoms(原子)、molecules(分子)、ions(离子)、electrons(电子)、protons(质子)、neutrons(中子)、isotopes(同位素)、radioactive(放射性的)、decay(衰变)、half-life(半衰期)、nuclear fusion(核聚变)、nuclear fission(核裂变)、energy(能量)、power(动力)、fuel(燃料)、...
His atomic masses were not all careful and exact, but they formed the basis for the modern periodic table (元素周期表). John Dalton died in 1844 in England.Today,scientists everywhere accept Dalton's idea of how the atoms were made.A simple country boy showed the world a new...
For example, a periodic table of the chemical elements, from first hydrogen elements of it, to the No. ninety-second uranium elements of it, the whole development process of it in nature, in the universe, even in the modern supernova explosion theory, is also a gradual process of the ...
It is a subfield of inorganic chemistry, which is concerned with the properties of all the elements in the periodic table and their compounds. Inorganic chemistry investigates the characteristics of substances that are not organic, such as nonliving matter and minerals found in the Earth’s crust....
2. What conditions should be met if something is burnt? Combustible [kəm'bʌstəbl] 可燃物 Combustion [kəm'bʌstʃən] improver 助燃剂 Temperature sodium magnesium aluminium potassium calcium iron copper zinc Periodic table of elements 6 Can these metals be burnt with the help...
While he provides a typology of interpretation, virtually a periodic table of kinds of interpretation, Iser describes the interpretive act as a form of translation in which what is basic and unavailable to us becomes "a productive mapping of ever new territories." The interpretive mapping is ...
By Richard Alba; The convergence between the common-sense method of reading a contingency table and regression-based models of its RD Alba - 《Quality & Quantity》 被引量: 5发表: 1982年 Deep-learning estimation of band gap with the reading-periodic-table method and periodic convolution layer ...
Now look at group 17 or VIIA in the periodic table, which includes the chemical elements fluorine (F), chlorine (Cl) and so on. These are the halogen elements. If a halogen element gains a single electron, it becomes an ion with a–1 charge and a full outer electron shell. If an ...
(periodic table of elements) 现代睡眠之父、芝加哥大学教授柯莱特曼和他的学生阿瑟发现,人在睡觉的时候,大脑皮层还在活动,尤其在“快速眼动期”,大脑皮层的活动跟醒着的时候一样剧烈。这时候,大脑做了很多信息整理工作,深化和巩固我们醒着的时候学到的技艺,让碎片化知识形成更完整的“图景”。脑科学家甚至认为,...
(periodic table of elements) 现代睡眠之父、芝加哥大学教授柯莱特曼和他的学生阿瑟发现,人在睡觉的时候,大脑皮层还在活动,尤其在“快速眼动期”,大脑皮层的活动跟醒着的时候一样剧烈。这时候,大脑做了很多信息整理工作,深化和巩固我们醒着的时候学到的技艺,让碎片化知识形成更完整的“图景”。脑科学家甚至认为,...