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- An alizarin complexone(ALC) flow injection spectrophotometric method for determination of trace fluoride in water has been studied. 研究并建立了测定水中痕量氟化物的氟试剂（ALC）－流动注射分光光度法。
- Determination of trace fluoride in foods using linear sweep adsorptive stripping voltammetry 线性扫描吸附伏安法测定食品中痕量氟
- Kinetic Spectrophotometric Determination of Trace Fluoride Based on Inhibitory Descoloring of Methyl Red 阻抑甲基红褪色动力学光度法测定微量氟
- DETERMINATION OF TRACE FLUORIDE IN WATER AND A SURVEY OF DRINKING WATER FLUORIDE IN BEIJING DISTRICT 水中微量氟的测定及北京地区水氟调查
- Pretreatment Method for the Determination of Trace Fluoride, Chloride and Sulfate in Tantalum Pentoxide and Columbium Pentoxide by Ion Chromatography 离子色谱法测定五氧化二铌和五氧化二钽中痕量氟氯和硫酸根离子的前处理方法
- I can't trace that letter you sent me. 我找不到你寄给我的那封信。
- He spoke without a trace of emotion. 他说话时毫不动感情。
- Did the police find any trace of the murderer? 警方找到凶手的行踪了吗？
- They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹。
- There was barely a trace of salt in the soup. 汤里简直一点盐也没有放。
- The post office tried to trace the lost letter. 邮局设法查出那封丢失的信。
- The kids are learning to trace the letter. 孩子们学描字母。
- He always spoke with a trace of sarcasm. 他说话总带着一丝讽刺。
- The powerhouse was trace out accurately later on a large scale map. 后来发电站被精确地描画在大比例地图上。
- A faint or fleeting indication; a trace. 模糊的暗示模糊的或一闪即逝的暗示; 迹象
- The country woke from her trace of two hundred years. 这个国家在沉睡了200年之后觉醒过来了。
- The rain flushed away the trace left by the criminals. 大雨把犯罪分子遗留的痕迹冲刷掉了。
- A slight trace of color; a tinge. 色调轻微的一抹颜色; 色调
- The family can trace its history to the 17th century. 这个家族的历史可以追溯到十七世纪。
- Does fluoride help prevent cavities? 氟可以防止蛀牙吗?
