查询词典 trace fossil

Fossil history Modern and geological distributions of Castanopsis are studied based on published data and herbarium specimens as well as fossil records .

根据文献资料和标本馆及化石记录，讨论了壳斗科栲属植物的现代分布和地史分布。

Is found to have a close relationship with the living Delesseria according to detailed morphological study between the fossil and modern Delesseria. These new findings show that the Chengjiang Biota is high in species diversity of fossil algae and might offer new evidence for a better understanding of the Cambrian explosive biological evolution and its paleoenvironment.

Nov。。通过比较形态学研究，探讨了该宏观化石藻类的分类归属与亲缘关系，进一步丰富了澄江生物群生物物种多样性的认识，并为研究早寒武世生物演化及其古环境提供了新的化石证据。

Hitherto mankind has relied on fossil fuel for a major part of its energy supply. Obviously the reserve of fossil fuel is by no means unlimited and will eventually be exhausted after decades. Hence, so far as long-term viewpoint is concerned, it is of importance to utilize the abundant and elean solar energy as an alternative energy source. Stimulated by this objective, studies on the preparation of suitable thin semiconductor films of larger size using simpler methods have attracted increasing interests.

从应用角度看，目前人类利用的矿物燃料其储量终究有限，而太阳能广泛存在，作为一种新型的能源，就长远的现点而言，具有巨大的潜力和广阔的前景，近些年来，研究用简单的方法制备大面积的化合物半导体薄膜材料，越来越受到重视，我们采用电沉积的方法在Ni、Ti以及导电玻璃等基底上沉积了多种硫属化合物半导体材料。

Red Coral Shell Fossil is one of them, it is the fossil of halobios due to the movements of earth crust .

红珊贝化石》就是其中一种，因地壳变迁而形成的海洋生物化石。

Europe, the vast majority of classic Hipparion fossil fossil origin has been almost completely excavated, most of the poor outcrop.

欧洲绝大多数三趾马化石经典产地的化石已经发掘殆尽，露头大多很差。

Then; we compare the calibrated fossil shell results with the datings of the soil humin fraction and concentrated pollen in order to evaluate the reliability of the dating terrestrial mollusks fossil shells.

运用现生蜗牛壳体的AMS14C测定来校正化石蜗牛的年龄，结合剖面中孢粉浓缩物、土壤有机质的AMS14C年代学对比研究，发现蜗牛化石壳体的文石可以提供较可靠的年代数据，为14C测年的可靠性研究提供了一种可能的途径。

"Red Coral Shell Fossil "is closely related to Buddhism, and it is a kind of tridacna (Marine large-scale shellfish fossil) which is one of the seven treasures of Buddhism.

红珊贝化石》它与佛教关系密切，是佛教七宝之一砗磲的一种。

Annual supply, demand, profit and loss of EF (1995-2005) for Tianjin were calculated based on MEFM. Per capita Ecological Footprint of arable land, pastureland, forest land, water area and fossil-energy land were 0.0009,-0.3224,-0.1991, 0.0255,-1.9600 hm^2cap^(-1) respectively. The deficit of PEF for pastureland, forest land and fossil-energy land increased annually except that the PEF for forest land and water area increased a little. During the period of 1995-2005, higher energy consumption of per unit production, accretions of population and built-up area were the main factors to the increasing of PEF deficit for Tianjin.

利用改进后的生态足迹模型计算天津市1995-2005年的生态足迹及其动态变化值，天津市耕地、牧草地、林地、水域和化石能源用地人均生态足迹盈亏分别为0.0009，-0.3224，-0.1991，0.0255，-1.9600hm^2人^(-1)，除耕地和水域略有盈余外，牧草地、林地和化石能源用地人均生态赤字均呈递增趋势。1995-2005年间天津市单位产值能耗居高不下、人口规模增长与建筑用地扩张是导致人均生态赤字扩大的根本原因。

About 40 calories of fossil fuel energy go into every calorie of feed lot beef in the US(2) Compare this to the 2.2 calories of fossil fuel energy needed to produce one calorie of plant-based protein.

3约40卡路里的矿物燃料能源进入每个热量饲料很多牛肉在美国（ 2 ）比较，这2.2卡路里的化石燃料的能源需要，生产一卡路里的植物为基础的蛋白。

In Kenya,eighty percent of pepole depends on fossil fuel for lighting needs .Fossil fuel are oil,natural gas and coal.

在肯尼亚，80%的人用化石燃料照明，化石燃料有石油，天然气和煤。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。