Terms for subject Electronics containing benefits

English	Chinese
benefit-cost analysis	收益-成本分析
benefit-cost ratio	利润成本比
benefit-risk analysis	利益-风险分析
cost-benefit analysis	益本分析
cost-benefit analysis	费用-收益分析
cost-benefit analysis	麻本顶盔分析
cost-benefit analysis	技术经济收益分析
cost-benefit comparison	成本效益比较
differential cost benefit analysis	微分成本效益分析
direct irrigation benefit	直接灌溉效益
economic benefit analysis	经济效益分析
economic benefits indicator	经济效益指标
intangible benefit	非物质形式的效益
net irrigation benefit	纯灌溉效益
net irrigation benefit	灌溉净效益
primary project benefit	工程的初期效益
risk-benefit analysis	风险利益分析
secondary benefit	间接效益
So what are the benefits and advantages of eBooks?	那么，电子书的好处和优势是什么呢？