useful efficiency的意思|示意

While these are not exactly critical success factors for overall success with SOA, all such information is useful for obtaining maximum efficiency.

虽然这些不完全是实现整体SOA成功的关键因素，这些信息对于获得效率最大化非常有用。

Setting the value to once is useful if a constraint is static once initialized, as it will then only be evaluated once and increase efficiency.

如果一个约束在初始化之后一直是静态的，那么可以将这个值设为once，这样可以使约束只计算一次，可以提高效率。

Anything that can increase farming efficiency—the amount of crops we can produce per acre of land—will be extremely useful.

任何能提高农业效率的东西——能提高我们每英亩土地生产的农作物数量的东西——都是非常有用的。