The average load of each shelf is 15kg. The samples shall not be put over crowded or overloaded for the sake of hot air convection.
搁板每块平均负荷为15公斤，放置试品时切勿过密与超载，以免影响热空气对流。
I've a few more points about the use of cross-reference slips and out CARDS and when to transfer old material so that the files don't become over crowded.
还有几点，是有关使用相互参照条和借出卡的问题以及何时转移旧资料以免卷中文件过多的问题。
Thousands of refugees are packed into over-crowded towns and villages.
成千上万的难民涌入拥挤不堪的城镇和村庄。
The prisons are as over-crowded as the farmlands are empty.
监狱里人满为患，而田地却无人耕种。
The prisons are as over-crowded as the farmlands are empty.
监狱里人满为患，而田地却无人耕种。
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