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- radioactive chemical element 放射性化学元素
- We must include this chemical element in the group. 我们必须使组里包括这种化学元素。
- Content of Other Chemical Element Max. 化学元素含量,不大于。
- Hydrogen is the lightest chemical element of all. 氢是所有化学元素中最轻的。
- It is therefore my task to present to you radium in particular as a new chemical element,and to leave aside the description of the many radioactive phenomena which have already been described in the Nobel Lectures of H.Becquerel,P.Curie and E.Rutherford. 因此,我的任务就是将镭作为一种新的化学元素特别地介绍给你们,而不去描述许多其他的放射现象,这些现象在亨利·贝克勒尔、皮埃尔·居里和卢瑟福的诺贝尔演讲中已经有所描述。
- The discovery of the chemical element is a happy accident. 发现这种化学元素纯属偶然。
- So they represented this chemical element with a solar symbol. 所以他们用太阳符号来代表这种化学元素。
- Semimetallic chemical element, chemical symbol B, atomic number 5. 半金属的化学元素,化学符号B,原子序数5。
- Summarize the chemical element of momordica charantia. 对苦瓜的化学成分进行了概述。
- Carbon and hydrogen are chemical elements. 碳和氢是化学元素。
- Two million gallons of radioactive chemicals have poured out from the nuclear plant. 两百万加仑放射性化学物品已从核工厂里扩散开来。
- Tidies up in the medication ingredient has the harm chemical element. 整容的用药成份里有有危害的化学元素。
- Nuclear Chemistry: radioactive chemicals, radiation chemistry, radiation chemistry, isotope chemistry, nuclear chemistry. 核化学:放射性化学品,辐射化学,辐射化学,同位素化学,核化学。
- Oxygen is a colorless,taseteless,odourless,gaseous chemical element. 氧气是一种无色,无味、无臭的气体状的化学元素。
- "Boron: Semimetallic chemical element, chemical symbol B, atomic number 5. 硼:半金属的化学元素,化学符号B,原子序数5。
- He could recite the names of all the chemical elements. 他能够朗诵所有化学元素的名字。
- Robotics have been developed to handle nuclear and radioactive chemicals for many different uses including nuclear weapons, power plants, environmental cleanup, and the processing of certain drugs. 机器人技术已经被开发用于处理核能和放射性化学制品的很多不同用途,包括核武器、电厂、环境清洁和某些药品的处理。
- The tendency of chemical elements with similar positions in the periodic table to have similar properties. 周期律化学元素在周期表中有相似位置时具有相似特性的趋势
- It's twenty year since the scientist set out on his work of discovering the valuable chemical element. 这位科学家从事发现珍贵化学元素的工作已有20年了。
- Isotope: One of two or more species of atoms of a chemical element having nuclei with the same number of protons But different numbers of neutrons. 同位素:一种化学元素的两个或多个类型,它们的原子核具有相同的质子数,而中子数却不同。