短語詞組短語assurance e factor 安全系數(shù)water supply assurance factor 給水保証率irrigation assurance factor 灌溉保証率Quality Assurance Factor 質(zhì)保証影響因子effective assurance factor 有傚性保証因素solar energy assurance factor 太陽能保証率heat transfer assurance factor 換熱保証度assurance factor of strength 強(qiáng)度保証率assurance factor of water supply 供水保証率 返回 assurance factor