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地面蓄水
1、fluid retention───[医]液体潴留
2、customer retention───客户保留;顾客维系
3、employee retention───员工留任
4、retention rate───保留率;(承租人的)留购率;继续服役率,服役期满不退役的比例
5、retention───n.保留;扣留,滞留;记忆力;闭尿
6、retention policy───[经] 自留责任保险;自留责任保险单
7、surface───vi.浮出水面;vt.使浮出水面;使成平面;adj.表面的,肤浅的;n.表面;表层;外观;n.(Surface)人名;(英)瑟菲斯
8、retention force───保持力
9、retention plan───保留计划;挽留计划
1、Objective: To evaluate the influence of denture material and its surface roughness on retention of upper complete denture .───目的:评价全口义齿基托材料及其表面粗糙度对义齿固位的影响。
2、In paper making chitosan can be used as fortifier sizing agent retention and filtration aid surface modifier and flocculation agent for paper-making effluent.───在造纸方面,壳聚糖可用做纸张增强剂、施胶剂、助留助滤剂、表面改性剂和造纸废液的絮凝剂。
3、concluded that surface mulching in the form of stubble retention and vegetative coverage is more important than any other management option in improving infiltration.───结果表明,就提高渗透而言,以残茬保留及植被覆盖形式的表面覆盖比任何其他管理措施更重要。