an element is a substance , all of _______ atoms have the same atomic number为什么选whose ? 请高手讲讲..

There is an element of chance in everything是什么意思? an element is a substance , all of _______ atoms have the same atomic number为什么选whose ? 请高手讲讲.. 英语翻译The voltage across an element is the work requried to move a unit of charge through the element.When the passive convention is used to assign the reference direction,the product of the element current and the element voltage gives the pow a bit of 和 an element of 区别, Perhaps there is an element of truth如果后面是two element 是不是there is要变为there are? 英语翻译An element is missing,that spark that brings to life a real story,regardless of whether the history or the food is right. There is an element of defeating the organization 译There is an element of defeating the organization ...that is separate from the ideological component 英语翻译as most people spend a major part of their adult life at work,job satisfaction is an important element of individual wel Show that a group must be an Abelian group if the order of any element in the group,expect for the identity ,is 2. set language and notation(数学语言和符号）拜托了各位 Union of A and B Intersection of A and B number of element in set A ...is an element of…” complement of A The empty set universal set A is a of B A is a proper subset of B A is no What is the mass mumber of an element?ps:Please answered in EnglishI want the define of mass mumber of an element 英语翻译That the parts all fit together properly is an essential element of mass production. there is an element of doubt in many minds about these two aspects. There is an element there about competition then,isn’t there? What is the atomic number of an element?ps:Please answered in English The atomic number of an element X is 15.The number of electrons in an anion of X is?但是eleltrons不是等同atomic number吗?A 10B 12C 15D 18 please set a element The relative atomic mass scale makes it possible to know how many atoms of an element are element接上面 are present in a sample of the element with a measurable mass.这句话的句子成分怎么划分啊?