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- Deuterium, a natural isotope of heay hydrogen, haing one proton and on neutron, whereas normal hydrogen has one proton and zero neutrons, could be used routinely. 重水中的天然同位素氘具有一个质子一个中子，它不同于正常的氢只有一个质子没有中子，可以常规应用。
- Residence time ,storage and storage coefficient of covered Karst water in Dachahe area of Pingliang are evaluated by natural isotope based on wellmixed model of water body. 应用天然同位素及水体的完全混合模型，计算了平凉大岔河隐伏岩溶地下水的滞留时间、含水层储水系数及储存量。
- Osmium isotopes in the natural isotopic mixture are separation by gas centrifuge technology. 对天然锇同位素进行了离心分离。
- Natural isotopes, 7Be and 210 Pb,including their sources, sinks, and their principles of tracing the atmospheric transport process are briefly introduced in this paper. 文章介绍了大气中天然放射性核素铍 7(7Be)、铅 2 10 (2 10 Pb)源、汇特征以及示踪大气动力输送过程的一般原理。
- site-specific natural isotope fractionation-nuclear magnetic resonance 点特异性天然同位素分馏核磁共振技术
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- Our motherland flows with natural resources. 我们祖国蕴藏着丰富的天然资源。
- Events took their natural course. 事态依自然进程发展。
- She has a natural wave in her hair. 她的头发自然卷曲。
- Magnetism is a natural phenomenon. 磁力是一种自然现象。
- It is difficult to be natural when one is tense. 人在紧张的时候很难泰然自若。
- The egoism of an artist sometimes seem natural. 艺术家的自负有时看起来是自然的。
- They used only natural pigments to dye the wool. 他们只用天然颜料染毛织品。
- Children are natural exhibitionists. 儿童天生喜欢自我表现。
- Everything we used was made from natural materials. 我们所用的一切都是由天然材料做成的。
- It's quite natural that you should succeed. 你的成功是很自然的事情。
- He's a natural for the role of Lear. 他是李尔王这一角色的理想人选。
- Most first-class footballers are natural athletes. 多数一流的足球运动员都是天生的健将。
