您要查找的是不是:
- isotopic geothermometer 同位素地热温标
- Isotopic discrimination is not likely. 同位素甄别是不可能的。
- Isotopic geochronology and geochemistry II. 同位素地质年代学与地球化学2。
- isotope geothermometer 同位素地质温度计
- Measurement of geologic time,as through isotopic radioactive decay. 地质年代测定是通过放射性同位素衰变来测定的。
- From 3.5 to 0 ka B.P. ,lake water was in an isotopic steady stage. 5~0ka B.;P;湖水处于同位素稳定阶段。
- An isotopic analysis of the grains has made that fear come true. 一项对这些颗粒的同位素分析让这种担心成真了。
- How could such a change in isotopic composition have come about? 同位素的组成有这样的变化,究竟是如何发生的?
- The geothermometer is one of the most important methods for reconstructing the thermal history of sedimentary basins. 古温标是恢复沉积盆地热演化历史的重要指标之一。
- The isotopic signatures of most ancient limestones indicated the same process. 大多数古代石灰岩的同位素特征说明了同样的过程。
- Measurement of geologic time, as through isotopic radioactive decay. 地质年代测定通过放射性同位素衰变来测定地质年代
- The lengths of confined fission track were used as a geothermometer to analyze the thermal history of each of the four single well and the erosion thickness of Dongying formation. 研究表明,热流演化随地质历史的发展是逐渐减小的,但在凹陷的不同部位减小的程度不同;
- Being a noble gas, it resists chemical bonding with other elements and is thus easy to purify for isotopic analysis. 由于氙是惰性的,不易与其他元素产生化学键,因此很容易纯化以进行同位素分析。
- It is important to avoid the use of uranium compounds of unspecified isotopic composition. 要避免使用那种非专用的同位素成份的铀化合物。
- The progeny of vocahic spurting inJinningian is studied through isotopic era, which belonys to the morning of new proterozoic era. 经同位素年龄研究属晋宁期火山喷发产物,时代归属为新元古代早期。
- The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay. 半衰期放射性样品的原子核经历一半放射性衰变所需要的时间
- Our results show that the two-pyroxenes geothermometer proposed by Bertrand and Mercier(1985)is the best one update for estimating temperatures of the mantle peridotite xenoliths. Their method of calibration also has a general significance. 结果表明:(1)Bertrand and Mercier(1985)提出的二辉石温度计是目前为止最适合用于幔源包体的温度估计,其推导方法也有普遍意义。
- Isotopic studies from geothermal fields indicate that about 95% of the thermal fluid from steam wells is meteoric in origin. 地热田油同位素研究证明:蒸气井热流体的95%25左右是大气降水成因的。
- Another mystery is the isotopic composition of xenon found in minerals from the Oklo uranium deposit in Gabon, Africa. 另一个令人费解的问题就是在非洲加蓬的奥克洛铀矿床的矿物中所发现的氙同位素组成。