为嘛要给宝宝用无氟牙齿清洁产品？
目的：评价含氟或无氟牙膏对酸蚀釉质刷牙磨损的影响。
AIM: to evaluate the effect of fluoride in toothpaste on brushing abrasion of eroded enamel.
实验结果为深入研究无氟保护渣提供了新的思路和方法。
The experimental results have provided a new method for the further research of mold powder without fluorine.
在此基础上，提出了连铸无氟保护渣今后研究的方向和重点。
The further study and development trends of this field are also outlined.
该生产基地的建成投产，标志着中国无氟制冷生产跨进世界领先行列。
The completion and entering into production of this production base, signifies that China's fluorine-free coolant production has stepped into the world's leading ranks.
专业、完善的质量管理体系的实施，使公司产品率先实行双绿色无氟化生产。
Professional, comprehensive quality management system implementation, so that our products take the lead in green non-fluorinated double production.
为此，但只是治标不治本，要根本上防治氟化物的污染，在于用无氟乳浊玻璃。
But it is a temporary solution and if we want to control the fluoride pollution, we must use opaque glass with fluorine-free.
论文利用二次正交回归的设计方法对无氟保护渣的成分与熔点的关系进行了研究。
In this paper, the relationship between component and melting point of fluorine free mould fluxes was studied by means of regressive orthogonal design.
汤姆的缅因州无氟儿童牙膏的使用自然来源的钙和二氧化硅磨料，轻轻地清洁牙齿。
Tom's of Maine Fluoride-Free Children's Toothpaste uses naturally sourced calcium and silica abrasives to gently clean teeth.
同时宾夕法尼亚州州立大学帕克学院麦特珀斯正和同事们开发一种基于声音的无氟空调系统。
Meanwhile, Matt Poese and colleagues at Pennsylvania State University in University Park are developing an HFC-free air conditioning system based on sound.
解决了连续大电流区间熔滴过渡稳定性问题，实现了无氟混合气体保护的高熔敷率MAG焊工艺。
The stabilization of metal transfer in the range of high continuous current is solved, and the high deposition rates MAG process without helium in shielding-gas mixture is realized.
广东科龙集团无氟生产线中的预混站是使用环戊烷危险物品配制发泡剂的重大危险源，燃烧爆炸事故风险较大。
Because cyclopentane is a flammable and explosive substance, the station with large quantity of it belongs to major hazard installation.
广东科龙集团无氟生产线中的预混站是使用环戊烷危险物品配制发泡剂的重大危险源，燃烧爆炸事故风险较大。
Because cyclopentane is a flammable and explosive substance, the station with large quantity of it belongs to major hazard installation.
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