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.
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.
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.
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.
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.
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