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- The direction,velocity and capacity of brine flowing through a well have been measured using lithium isotopic trace and isotopic dilution mass spectrometry. 采用锂同位素示踪技术，对察尔汗首采区采卤过程中晶间卤水的流向、流速和流量进行了测定。
- The isotopic tracing technique is an advanced method in the research of photosynthesis of plants. 摘要同位素示踪技术是进行植物光合作用研究十分有效的手段。
- Stable isotopic traceability technique has been successfully applied in some food areas, and studies in the meat product increased recently. 稳定同位素溯源技术过去已在食品生产的某些领域得到成功应用，近年来在肉制品中的研究增多。
- The Application of Isotopic Trace Technology in Animal Research 动物试验中同位素示踪技术的应用
- Using 14C isotope trace and SDS-PAGE etc techniques research remobilization of carbon assimilate and compensative effects, and the relation of water and quality. 利用~(14)C同位素示踪和SDS-PAGE等技术对不同水分亏缺下碳同化物再动员与补偿效应、及水分与品质的关系做了初步探讨。
- The application of 14C, 13C and 32P isotopic tracing in research of photosynthesis of plants was introduced in this artide, and the prospect on the study was also put forward. 综述了14C，13C，32P同位素示踪技术及其在植物光合作用研究中的应用，并对其后续研究进行了展望。
- Isotopic Trace Technique in Geothermal Pair Recharging Well System in Tianjin 天津地热对井回灌系统中的同位素示踪技术
- In this article, the basic principles of stable isotopic tracing technology and the research advancement were expounded.Furthermore, the promising of it and study aspect were primarily introduced. 文中系统阐述了稳定同位素溯源技术的基本原理，在肉类产品中应用的国内外研究进展，并对此技术应用的前景及今后研究的方向作了初步介绍。
- 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。
- And the study on application of lead isotope tracing for city environment pollution sources can get a good result. 铅同位素示踪理论应用于城市环境污染源的研究,能够取得比较理想的结果。
- 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
- In recent years lead isotope tracing has been playing its unique role in studying the source and migration of heavy metals in soil. 近年来铅同位素示踪在研究土壤中相关重金属来源及其运移途径起到独特的作用。
