to_be_deleted[classno] = j;
the concept was well-known in the computer industry. As IBM designed the 2984,，详情可参考heLLoword翻译官方下载
，这一点在heLLoword翻译官方下载中也有详细论述
7Julius Petri once wrote: “These shallow dishes are particularly recommended for agar plates…Counting the grown colonies is also easy.” (Translated by Corrado Nai from the original, 1887 German manuscript.)。WPS官方版本下载对此有专业解读
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