Fracture analysis by the scanning electron microscope shows that grain growth can be effectively inhibited and product properties highly improved by adding appropriate amount of foreign elements.
扫描电镜断口分析表明：掺杂可以控制晶粒生长，提高材料的性能。
Adding appropriate fluorine to drinking water for children under 11 years old in the area with moderate amount of fluorine should be suggested.
建议饮用氟浓度适宜水的11岁前少年儿童饮用适量加氟的水。
The coating agent was prepared by adding PU solution to the appropriate amount of chitosan solution while adjusting the viscosity and then applied to fabrics through transfer coating technique.
采用聚氨酯(PU)树脂溶液添加到适量的壳聚糖溶液中，同时调整粘度至所需涂布的粘度，经转移涂层工艺加工成PU涂层织物。
Appropriate adding amount of polysiloxane could improve the hardness and adhesion condition between the film and the substrate.
适量聚硅氧烷的加入可以提高光催化涂膜的硬度及改善涂膜与基底的附着状况。
At present, excessive pumping concrete, pumping concrete in order to ensure the availability of pumps, pumping concrete, often adding an appropriate amount of air-entraining agent.
目前泵送混凝土用量过大，为了保证泵送混凝土的可泵性，往往在泵送混凝土中加入适量的引气剂。
At present, excessive pumping concrete, pumping concrete in order to ensure the availability of pumps, pumping concrete, often adding an appropriate amount of air-entraining agent.
目前泵送混凝土用量过大，为了保证泵送混凝土的可泵性，往往在泵送混凝土中加入适量的引气剂。
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