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。
It was 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。
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。
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