Since it contains no schema that would require design or modification, the only regular maintenance to perform is a periodic packing to prevent it from consuming your entire disk.
由于ZODB数据库实例不包含需要设计或修改的模式，要执行的唯一例行维护是定期压缩以防止其耗尽整个磁盘。
The principle can help to (direct) the type selection or optimization design of packing column liquid-gas distributor.
此规律可以指导填料塔气液分布器的选型或优化设计。
The design method for optimizing an absorption unit in chemical processes is discussed and a process approach for optimizing a plate or packing column is proposed.
本文探讨了化工过程中吸收装置设计的优化途径，提出对板式或填料吸收装置施行优化设计的工艺方法。
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