vt. 向 ... 中加入氟化物

PH is 6.5 to 8, no sulfur or fluorid. PH值為6.

Electrode method has good selectivity,high sensitiveness and wide linearity to detection of fluorid in rain water. 電極法測定降水中的氟具有選擇性好、靈敏度高、線性范圍寬,降水中的渾濁和色度不影響測定的特點,測定范圍為0。

The influence concem about fluorid effecting the health was discussed,thinking that there is a suitable density fluorid in the drinking water. 對新鄉(xiāng)市不同水.

Artificial coral with more emulsion can use fluorid to make it muddy, using more colorant than transparent glass, but be careful not to separate grains out, preventing the surface from roughness. 仿珊瑚等乳濁程度比較高的可用氟化物乳濁,著色劑用量比透明玻璃要高,但需要防止析出晶粒而使表面粗糙。

TheyThe use a fluorid of fluoride to protect teeth is common in many parts of the world. 用氟化物保護牙齒被世界上很多國家所使用。