查询词典 fossil ivory

Cyatheaceae secondary protection of the national plant, is contemporary and ancient dinosaur plants, They are called by geologists a "living fossil."

桫椤是国家二级保护植物，是与恐龙同时代的远古植物，被地质学家称之为植物&活化石&。

The estate of fossil diatomaceous earth that is referred to in the Qing Dynasty gazetteers "rolls of books."

该地产化石的硅藻土在清代方志中即称之为&万卷书&。

The interpretation cannot be proven for the same reason that it cannot be disproven -- bone and fossil records are grossly deficient of cold, hard facts.

解释不能证明是出于同样的原因，它不能disproven--骨化石记录严重不足的冷酷事实。

The interpretation cannot be proven for the same reason that it cannot be disproven -- bone and fossil records are grossly deficient of cold, hard facts.

解释不能证明出于同样的原因，它不能disproven--骨化石记录寒冷严重不足，事实清楚。

Through comparison of energy inputs in corn fuel ethanol life cycle,fossil energy inputs of corn production and ethanol conversion processes were identified as the most important,and therefore nitrogen fertilizer,electivity and diesel used in corn farming and energy consumption of distillation and dehydration process in ethanol production could be known as the most influential factors for the energy benefit of corn fuel ethanol.

但是玉米燃料乙醇从原料的生产、乙醇的转化，一直到被燃耗的整个生命周期中的多个阶段需要直接或间接地消耗矿物能源，因而，虽然玉米燃料乙醇是可再生能源，然而是否具有可持续性及可持续性的大小则取决于其燃耗中所产生的能量与燃料乙醇整个生命周期中所消耗的能量相比是否有盈余及盈余的大小。20世纪70年代中期，玉米燃料乙醇的能量平衡问题研究首次在美国出现[2，3]，当时乙醇替代汽油的能量效益的有关研究指

It is made up of two excluding each other ichnocoenosis, namely epibenthic and endobenthic ichnocoenosis; The third one is quite monotony in fossil types, mainly of trails left behind by sediment-eating or detrital-eating animals grazing or feeding along the surfacial layer or on the surface of the sediments.

包括两个相互排斥的群落，底表生物遗迹群落和底内生物遗迹群落；第三个遗迹组合类别十分单调，主要为食沉积物或食碎屑性动物沿沉积物表面或表层牧食或觅食过程中留下的痕迹。

There are also a number of fossil genera, leptosporangiate ferns dating back to the Cretaceous era, eusporangiate ferns to the Devonian.

有化石证据表明，薄囊蕨从白垩纪时就有，而厚囊蕨可追溯到泥盆纪。

Both of these facts mean it is likely that some lineages which seem to make their first appearance in the extratropical fossil record actually started out near the equator.

上述两种因素都表明某些世系虽最早出现在热带外区域的化石记录上，实际上却有可能起源于赤道附近。

The study focus on the distribution patterns of modern and fossil benthic foraminiferal fauna and their relationship with environmental variables, and the physical and chemical properties of the deep water.

本项目以西太平洋边缘中、深层水体为对象，利用微体古生物学、生物地球化学和年代学方法，通过对现代底栖有孔虫分布特征及其环境控制因子、柱状岩芯中底栖有孔虫属种和形态类型的分布特征、底层水体的温度及营养水平、各主要古环境演化事件时期浮游和底栖有孔虫14C年代学特征等主要内容的研究，综合探索了晚第四纪以来西太平洋边缘中层和深层水体的性质和流通状况的演化史。

Also, the study provides spatial and temporal information on the distribution patterns and compositional characteristics of modern and fossil benthic foraminiferal fauna, and their relation to the environmental variables.

发现冲绳海槽中南部冰期-冰消期的底层水流通状况较冰后期弱，说明冰期时西北太平洋中深层水的演化没有对该海区底层水团的性质产生影响。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。