Quarks, which we also cannot see, are a model to explain the properties of the protons and neutrons in the nucleus of an atom.
夸克同样看不到,但它却是解释原子核中质子、中子性质的理论模型。
A method calculating one body density matrix of nucleus in the mean field shell model is proposed.
提出平均场壳模型下原子核单体密度矩阵的一种计算方法,验证该方法的可靠性。
The "Meaning Text" Model is the nucleus of the Moscow semantic school. It is a tool of encoding and decoding language.
《意思文本》模式是莫斯科语义学派的核心理论,是一种对语言的编码和解码的工具。
That was Cartesian space. When I plot r as a distance out from the nucleus that is sort of our simple-minded planetary model. Now let's look at energy.
笛卡尔坐标系,当我用r表示,离原子核的距离时,那只是我们头脑中简单的,类似行星的模型,现在我们看一下能量问题。
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