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- Abstract In this paper the basic method and feature and the application of thermal surface ionization IDMS for determining standard reterence materials have been described. 摘要 本文叙述用表面电离质谱法测定标准物质的基本方法、特点及其应用。
- Uranium isotope abundance ratio has been measured by total sample evaporation and signal integration, and a thermal surface ionization mass sepctrometry equipped with multicollector has been used. 采用全蒸发技术、离子流强度积分的方式,用多接收器热表面电离质谱计测量铀同位素丰度。
- Uranium isotope abundance ratio has been measured by total sample evaporation and signal integration,and a thermal surface ionization mass sepctrometry equipped with multicollector has been used. 采用全蒸发技术、离子流强度积分的方式,用多接收器热表面电离质谱计测量铀同位素丰度。
- The calculation and measurement for surface ionization 表面电离的计算与测量
- Progress of Thermal Surface Ionization IDMS in Determination of Trace Elements 热电离同位素稀释质谱技术在痕量分析中的新进展
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- The calm water surface is very much like a mirror. 那平静的水面十分象一面镜子。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- He is honest only on the surface. 他只是表面诚实而已。
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- The hard outer portion or surface area of bread. 面包皮面包的表面区域的硬皮
- Surface mail takes longer than airmail. 普通邮件比航空邮件慢。
- The surface of the lake is quite still. 湖面相当平静。
- It's2 yuan by surface mail and3.6 yuan by air. 寄平信2元,寄航空要3元6角。
- Wheels won't bite on a slippery surface. 车轮打滑。
- The surface must be thoroughly clean. 表面必须彻底弄清洁。
- The surface between the ribs of a ribbed vault. 梁腹,腹板某扇形拱的胁拱之间的平面