我们连续地将一种示踪物注入某稳定运动流体中之一点。
We continuously inject a tracer into a point in a steadily moving fluid.
在某些特殊情形下，可以利用天然示踪物的质量守衡原理来获得物质输运信息。
Nevertheless, in some circumstances, natural tracers can provide information on transport, on the basis of a mathematical model.
关键试剂，如：抗体，示踪物，参考标准品和基质应适当定义并在规条件下储存。
Key reagents, such as antibody, tracer, reference standard, and matrix should be characterized appropriately and stored under defined conditions.
以硝酸镧作示踪物用电子显微镜观察喂饲克山病病区粮3个月的大白鼠心肌细胞膜通透性的变化。
Sarcolemmal membrane permeability alteration of cardiac myocytes in rats fed on grains from Keshan disease endemic area was studied with electron microscopy, using La(NO3)3(La3 + )as the tracer.
用同位素d_2o和KCL作示踪物，在间断灌水的条件下，追踪了D_2O和阴、阳离子在土柱中移动的动态。
Under the conditions of uninterrupted irrigation D_2O and KCL as the tracers traced the kinesis of D_2O, positive and negative ions in the edaphic column.
本文对这一技术的研究进展作了评述，介绍了荧光偏振免疫分析技术的基本原理、优越性、示踪物结构设计、制备、及其应用。
The review described the development of this technique. The principle and superiority of FPIA, tracer's designed and prepared, and its applications were introduced.
所谓同位素构成，是指在某一元素的特定样品中该元素不同同位素的百分比率。同位素构成因此特别适合于作为铜矿厂来源的示踪物。
Isotopic composition, the percentages of the different isotopes of an element in a given sample of the element, is therefore particularly suitable as an indicator of the sources of the ore.
本文结合实例，介绍了目前在综合利用锆石的形态、成分组成及年代学特征进行物源示踪的一些主要进展。
In this paper, some new progress through analyzing the shape, composition and chronology of zircon to trace basin source are introduced.
相对长江沉积物而言，黄河沉积物REE 分布模式与上陆壳的更为相近，可用来示踪上陆壳平均组成。
The Yellow river sediment has similar REE composition to the upper continental crust(UCC), so it can also be used to trace the UC composition.
稀土元素(REE)在揭示沉积环境，研究沉积物物源及成因方面具有重要的示踪意义。
Rare earth elements (REE) have important tracing significance on studies about sedimentation environment, source and forming of sediments.
采用模拟污染物的同位素示踪技术研究了客土覆盖对降低大豆中放射性铈积累的效应。
Effects of covering with new soil on reducing the accumulation of radio-cerium in soybean were studied adopting the isotope-tracer techniques of simulated pollutants.
在人工示踪法中叙述了中子活化示踪沙技术和稀土元素- DTPA螯合物示踪法。
In the paragraph of the method of using artificial tracer, there is the explanation about the tracer technology of neutron activation analysis and the method of Lanthanide-DTPA tracer.
简要介绍了盆地沉积物示踪山脉隆升剥蚀的几种方法并给以实例分析。
Several methods using basin sediment to constrain mountain uplift erosion are introduced.
燃煤飞灰(以下简称飞灰)作为时间标记物克服了放射性同位素137cs示踪方法不能鉴定大气核爆炸之前的土壤再分布过程这一缺陷。
Using fly ash as a tracer overcomes the limitation that the 137cs tracer method has in explaining the processes of soil redistribution prior to a nuclear explosion in the atmosphere.
本发明是一种示踪型水质稳定剂，由阻垢剂、缓蚀剂、示踪性聚合物、助剂等复合组成，具有高效、低毒、可示踪的特点。
The tracing water quality stabilizer consists of scale retardant, corrosion inhibitor, tracing polymer, assistant, etc. and has the features of high efficiency, low toxicity and tracing.
本水处理剂应用的示踪性聚合物是复合药剂中起缓蚀、阻垢作用的组分之一，因此可以更准确地指示复合药剂的有效浓度。
The tracing polymer as one of the corrosion retarding and scale inhibiting components can indicate the effective concentration of the composite chemical accurately.
运用近年来国内外广泛采用的特征矿物物源示踪法来研究长江三峡的贯通，并选择攀枝花钒钛磁铁矿床中的钛磁铁矿作为示踪矿物进行了探讨。
This paper presents a research for the origin of Three Gorges by using the approach of diagnostic minerals tracing which has been well developed globally in recent several years.
运用近年来国内外广泛采用的特征矿物物源示踪法来研究长江三峡的贯通，并选择攀枝花钒钛磁铁矿床中的钛磁铁矿作为示踪矿物进行了探讨。
This paper presents a research for the origin of Three Gorges by using the approach of diagnostic minerals tracing which has been well developed globally in recent several years.
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