...） 关键字: Pb2+-F--H2O系；污酸；氟化铅；热力学[gap=1552]Key words: Pb2+-F--H2O system; acidic wastewater; lead fluoride; thermodynamics...
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lead fluoride crystal 氟化铅晶体
cubic lead fluoride 立方相氟化铅
lead fluoride crystals 氟化铅晶体
Lead II Fluoride 氟化铅
fluoride lead silicate glasses 氟铅硅酸盐玻璃
Lead or annealed copper washers are most often used in fluorine and other reactive fluoride service.
铅或退火铜垫圈最经常用于氟和其它活泼氟化物设施。
Conceal disturbing elements like iron, copper, lead with hydrogen fluoride amine-EDTA, add the potassium iodide to separate iodine, and take starch as indicator, titrate with sodium hyposulfite.
试样以王水分解、泡塑富集分离金，硫脲解脱，以硝酸-硫酸破坏硫脲，用氟化氢胺- EDTA掩蔽铁、铜、铅等干扰元素，加碘化钾使之析出碘，以淀粉为指示剂，用硫代硫酸钠进行滴定。
The fluoride in phosphate fertilizer production can not only impair workers' upper respiratory tract, bone and teeth, but also lead to fluorosis of bone.
结论磷肥生产中氟化物对作业工人上呼吸道，骨骼和牙齿有损害作用，可导致氟骨症。
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