With these versions, Lotus developers carefully picked what are often the highest value targets for reducing TCO: disk space, storage costs, I/O operations, and the cost of operational maintenance.
通过这些版本，Lotus 开发人员仔细地筛选出了最有利于降低 TCO 的目标：磁盘空间、存储成本、I/O 操作和操作维护成本。
Finally using hydrodynamics similar principles and by reducing the proportion of a certain kind of model, which would save the cost of experiments and experimental space.
利用流体力学的相似原理，按一定的比例缩小构建出实物模型，这样可以节省试验费用和试验空间。
Meanwhile, the optimization also includes reducing the computational complexity of the query optimization of trimming, and query results combination which considered both space and time cost.
同时，优化中还包括降低计算复杂度的查询裁剪的优化，以及兼顾空间和时间开销的查询结果合并方式。
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