单根足尺寸的雪茄中含有的尼古丁相当于好几根根香烟中尼古丁的含量。
A single full-size cigar can contain as much nicotine as do several cigarettes.
本文首先研究了缬氨酸在单根色谱柱上的分离情况。
First, the separation of L-Valine on a single chromatographic column was investigated.
本文首先研究了缬氨酸在单根色谱柱上的分离情况。
First, the separation of L-Valine on a single chromatographic column was investigated.
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