Using hollow cathode lamps, the atomic state lifetimes have been measured by laser fluorescence spectroscopy.

利用空心阴极放电灯的激光感生荧光技术进行了原子能级寿命测量的研究。

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The other two methods are very simple, although they can give the atomic state of equivalent elections only by nonequivalent electrons.

另外两种方法，虽然要利用非等效电子的原子态才能给出等效电子的原子态，但方法简单。

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Today's state-of-the-art atomic clocks have proven Einstein right.

当今先进的原子时钟已经证明了爱因斯坦是对的。

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In other words, just want to know where the electron is somewhere within the shell radius of the ground state of atomic hydrogen anywhere.

换言之，我只是想知道,电子在哪,可以在氢原子基态下的半径,里面的任何地方。

麻省理工公开课 - 固态化学导论课程节选

It is the value of the radius of the ground state electron orbit in atomic hydrogen.

它就代表氢原子基态电子,的轨道半径。

麻省理工公开课 - 固态化学导论课程节选

That is the ground state energy of atomic hydrogen.

同时也是氢原子基态的能量值。

麻省理工公开课 - 固态化学导论课程节选

The truth is that neither the U.S. intelligence community, nor the International Atomic Energy Agency, nor anybody else outside a very small circle in Iran has certain knowledge about the current state of Irans nuclear-weapons program, or how far it is from producing one or more usable devices.

CENTERFORSECURITYPOLICY: Where��s our Churchill?

The problem was compounded by others Negroponte also brought in from State, notably his assigning of the appallingly inadequate former U.S. ambassador to the International Atomic Energy Agency, Kenneth Brill, as the Director of the Counter-Proliferation Center and of Foggy Bottom "expert" Vann Van Diepen as the National Intelligence Officer for non-proliferation matters.

CENTERFORSECURITYPOLICY: Intelligence mis-estimates