The source codes that are found on the net are either too complex (20 + classes), or don't provide sufficient efficiency.
在网络上找到的源码要么太复杂(超过20个类)，要命没有提供足够的效率。
2
An allocation satisfies the static efficiency criterion if it maximizes the net benefits from all possible USES of the resource.
一个如果从各种资源使用或最大净效益的满意的静态效率标准分配。
3
Energy efficiency (net energy gain or energy ratio) of corn-based ethanol as a substitute for fossil fuel is an important criteria for assessing its sustainability.