应根据市场的目标和需求优选或开发适合电动助动车使用特点的系列电池。
Most excellent selecting or developing series battery suited to electrical bicycle on the basis of the aim of market and requirement.
在此基础上，建立了水利水电工程考虑环境风险的开发规模优选模型。
Basing on this foundation, a mathematical model for exploitation scale decision of optimization which consider Environmental Risk is established.
这种方法也适用于油田开发方案评价与优选，计算结果与其它方法一致，并与实际相符。
This method can also be applied to appraise and optimize the development plan of oil field.
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