探险队采集的样品揭示了沉积物层之间化学成分及化石分布上的重大差异。
Samples recovered from the expedition revealed important differences in chemical composition and fossil distribution among the sediment layers.
证据就存在于海洋泥土，花粉化石和记录温度变化的化学同位素比值变化之中。
The evidence lies in ocean mud, in fossil pollen, and in changes in ratio of chemical isotopes that record shifts in temperature.
地质学家正在调查位于早期人类化石发现地之下的碳酸盐岩的化学组成。
Geologists are investigating the chemical composition of carbonate rocks that lie beneath the surfaces where early human fossils have been uncovered.
这项新技术将允许科学家对更多化石的化学特征进行研究，而不用在取样本的过程中破坏化石。
The new technique will allow scientists to study the chemistry of more fossils, without having to damage them by removing samples.
尽管另一些人，质疑层叠岩石化石是否是细菌活动的结果，但他们也想知道那些化石是否只是化学沉淀物。
Others, though, question whether fossil stromatolites really are the result of bacterial action, and wonder whether they might be chemical precipitates instead.
当射线轰击化石时，反弹回的信号的强度取决于每一个分子的形状和大小，以及它所处的化学环境造成的细微影响。
When the rays hit the fossil, the signal that bounces back depends on the shape and size of each molecule, and how it is being subtly influenced by the chemicals surrounding it.
X射线就像探针一样，可以检测到组成化石的单一化学成分。
The X-rays acted as probes, detecting the individual chemical building blocks that make up the fossil.
但是研究者发现角质蛋白复合物的化学键保留的很少。 富氮层在两个化石上都有所发现。
But the researchers found chemical-bond fingerprints of chitin-protein complex in thin, nitrogen-rich layers in both fossils.
然而，尽管这种'纯'气体方式的化学处理方案在上世纪90年代已经问世，但化石燃料电厂排放出的废气通常杂质很多。
Yet while this sort of chemical recipe was already shown in the 90s to work with a pure gas, the sort of emissions that come from a fossil fuel power station are typically full of impurities.
还有化石燃料的燃烧和有害的化学过程造成的地表的污染，以及你们的消费社会的生活方式造下的日常垃圾。
There is also much surface pollution through burning fossil fuels and harmful chemical processes, as well as the usual detritus left over from your consumptive way of life.
随着石化资源的不断枯竭和石油价格的飞涨，以化石资源为原料的化学品生产受到了严峻的挑战。
With the depletion of fossil fuel resources and the soaring prices of crude oil, the production of petrochemicals from fossil fuel as raw materials has been a severe challenge.
化学化石(烷烃和卟啉)是前寒武纪地层中生命存在的唯一证据。
Chemical fossils (e. g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.
因而前寒武纪化石的缺失和寒武纪三叶虫等突发式出现，好象一把双刃剑，对达尔文演化学说的塔基构成了威胁。
Therefore the deficiency of pre-Cambrian fossil and the sudden emergence of Cambrian trilobite are like a double edged sword posing threat for the very foundation of Darwin evolutionism.
运用绿色化学原理，论述了化石能源的环境影响和开发利用可再生能源的重要性。
With the principles of green chemistry, the article discusses the importance of environment effects of fossil energy sources and exploits and USES regeneration energy sources.
五龙沟金矿区硅化石英的稀土元素地球化学特征可较好地反映金矿化程度和多期次成矿特性。
REE geochemistry of silicated quartz reflects intensity and multiple epochs of gold mineralization in Wulonggou gold ore area.
古生物学专业研究化石和学习已灭绝的生物物种。课程包括化石的形成和化学，植物化石，实地和实验室的研究方法等。
Paleontology majors study fossils and learn about extinct life forms. Topics of study include fossil formation and chemistry, fossil plants, methods of research in the field and lab, and more.
从物理性爆炸和化学性爆炸两方面分析了液化石油气罐区发生火灾爆炸的危险，着重就罐区化学性爆炸进行了详细的分析和阐述。
In viewpoint of physical and chemical explosion , fire and explosion hazard was analyzed in LPG tank area. Chemical Explosion was discussed in detail.
从物理性爆炸和化学性爆炸两方面分析了液化石油气罐区发生火灾爆炸的危险，着重就罐区化学性爆炸进行了详细的分析和阐述。
In viewpoint of physical and chemical explosion , fire and explosion hazard was analyzed in LPG tank area. Chemical Explosion was discussed in detail.
应用推荐