对数据库系统而言,我们提到事务时,一般用ACID来描述事务的特点: A - Atomic(原子的):事务必须是全或全无的操作,要么全部成功更新,要么全部不被更新。 C - Consistent(一致的):一个成功提交的事务必须使数据库处于一个一致的状态。
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A - Atomic(原子的):事务必须是全或全无的操作,要么全部成功更新,要么全部不被更新。 C - Consistent(一致的):一个成功提交的事务必须使数据库处于一个一致的状态。
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atomic a 原子能的
Yttrium atomic absorption stand a 金属镧
a thermal atomic 热原子
a olute atomic weight 原子的绝对重量
atomic a orption 原子吸收作用
Flame Atomic A bsorption 火焰原子吸收
In fact, subsequent work has shown that in a periodic table, elements should not be ordered strictly by atomic mass.
事实上,后来的研究已经证明,在元素周期表中,元素不应该严格按照原子质量来排序。
Mendeleyev was bolder than Meyer and even assumed that if a measured atomic mass put an element in the wrong place in the table, the atomic mass was wrong.
门捷列夫比迈耶更大胆,他甚至认为,如果测量到的原子质量在表中把一个元素对应于错误的位置,这个原子质量就是错误的。
He had a tube with electrodes potted in it filled with atomic hydrogen. And by applying a voltage, he was able to get the gas to glow.
他有一根装着电极的管子,里面充满了氢原子。通过施加电压,他能够使气体发光。
In nineteen fifty-four, the Atomic Energy Commission and a special security committee moved against Mister Oppenheimer.
VOA: special.2009.06.14
And the technique is called, watch because this is a six-letter initialization, linear combination of atomic orbitals LCAO-MO into molecular orbital, LCAO-MO.
这项技术是,一个6字母初始设定,原子轨道的线性叠加,成分子轨道。
With another scientist, Mister Fermi wrote a nineteen forty-seven report to the Atomic Energy Commission.
VOA: special.2009.06.14
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