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- The radioactive methods for determining 129 I are mainly NNA and liquid scintillation counting, while the non radioactive ones are mass spectrometry, atomic emission spectrometry, etc. 涉及的放化分析方法主要有中子活化和液体闪烁计数法等,非放分析方法主要有质谱和发射光谱分析法等。
- Heat transfer coefficient,comprising convective and radioactive components may strongly depend on the actual flow enthalpy and density. 由对流和辐射两部分组成的热交换系数极大地依赖于实际活动的焓和密度。
- Heat transfer coefficient ,comprising convective and radioactive components may strongly depend on the actual flow enthalpy and density. 由对流和辐射两部分组成的热交换系数极大地依赖于实际活动的焓和密度。
- Radioactive ray is material thing. 放射线是实际的物质。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- Radium and uranium are radioactive elements. 镭和铀是放射性元素。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- A certain discharge of possible radioactive effluent. 一定量的可能有放射性的废水。
- Surprise is an essential component of my plan. 我这项计划主要就是想使大家惊喜一下。
- He is declared personal non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- Brimstone is a component part of explosive. 硫磺是炸药的一种组成成分。
- non radioactive isotope 非放射性同位素
- A radioactive isotope of carbon, especially carbon 14. 放射性碳碳的一种放射性同位素,尤指碳14。
- I had had a few beers and was completely non compos mentis. 我喝了些啤酒就头昏脑胀了。
- He was declared persona non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- A naturally occurring or artificially produced radioactive element. 放射性元素自然产生或人为制造的放射性元素
- Air force is an important component of national defense. 空军是国防的重要组成部分。
- A radioactive compound used in radiotherapy or diagnosis. 放射性药剂一种用于放射性治疗或诊断的放射性化合物
- Each component is carefully checked before assembly. 每个零件在装配前都经过仔细检查。