Atomic mass unit (AMU) 1/12 the mass of a neutral atom of 12C, equal to 931.5 MeV. Atomic number (Z) Integer equal to the number of protons in a nucleus; the order of an element in the periodic table. Atomic weight or nuclear mass number (A) An integer equal to the sum of the...
so they are assumed to have a negligible effect. Consequently, the nucleus accounts for almost the entire mass of the atom of any element, which means that a single proton or neutron has an approximate mass of 1 AMU.
125、take an adventure tour of 进行一次...的冒险 126、be fortunate enough to do sth 有幸做某事 127、for instance 例如 128、for sure 确实;毫无疑问 129、be starving 非常饥饿 【拓展】 starve for 急需;渴望 starve to death 饿死 be starved for/of 缺乏 be close to star...
this outspoken young man was rocking his one-year-old baby when he was suddenly inspired. Subsequently, “E=mc2” was born. It showed how a small piece of mass could produce an unbelievable amount of energy. Einstein then showed in his “theory of relativity” that not even time, mass...
RODERICK: Well, you mustn't worry about that. It's an advantage. 罗德里克:嗯,这一点你倒不必担心,这还是优点呢。 HENRY: I'm afraid I don't quite follow you, sir. 亨利:对不起,先生,你的话我没有听懂。 RODERICK...
I heard my voice shake and my eyes were full of tears as I thanked him for picking the very best one. He smiled, and then walked off to play, unaware of the effect he had on my day. I sat there and wondered how he managed to see a self-pitying woman beneath an old willow tree...
*atom n.原子 depth n.深,深度 broad adj.宽的,阔的 in broad daylight 在大白天 beneath prep.在...之下,在...正下方 resident n.居民,住户 male n.雄性动物 B3U5--Understanding Ideas.mp3音频:00:0003:35 Part 1.Understanding Ideas CLI...
century. ( ) 2 An atom is the smallest particle of matter. ( ) 3 Einstein was at work when he thought of the question “E=mc2”. ( ) 4 Einstein participated in the programme that developed the nuclear bomb. ( ) 5 Einstein observed changes in time, size and mass. ( ) 6 Fleming ...
Remember,thisnumberindicatesbothhowmanyprotonsandhowmanyelectronsthereareinaneutralatomoftheelement.记住，这个序数表示，在元素的一个中性原子中，有多少质子和电子。Themoderntable,arrangedinorderofincreasingatomicnumber,andMendeleev'stable,arrangedinorderofincreasingatomicweight,paralleloneanotherbecauseanincreaseinatomic...
was suddenly inspired. Subsequently, “E=mc2” was born. It showed how a small piece of mass could produce an unbelievable amount of energy. Einstein then showed in his “theory of relativity” that not even time,...