With the advent of some new techniques, the past several years have been a time of fascinating discoveries on the origin and early evolution of angiosperms.
近年来,被子植物起源和早期演化研究,由于手段和技术的更新,资料大量积累,取得了许多重要进展,成为植物学领域的一大热点。
In the paper, the origin and early evolution of the Betulaceae were discussed according to the viewpoint of unity between time and space in the evolution of plant group and based on the studies in paleobotany, phytogeography and phylogeny.
根据植物类群演化的时空统一观点，利用古植物学、地理分布和系统发育三个方面的研究结果，讨论了桦木科植物的起源和早期演化，认为：最早的桦木科植物生活在晚白垩纪桑托期，起源于中国中部地区，起源之后，一方面较缓慢地向欧洲散布，并在古新世到达欧洲；另一方面向中国东北地区散布，并迅速扩散到北极地区，通过白令陆桥在白垩纪最晚期到达了北美。
PROBLEMS IN ARCHEAN GEOLOGY
岩石圈早期演化中的一些问题(46亿年—25亿年)
THE ORIGIN AND EARLY EVOLUTION OF FEATHERS:INSIGHTS FROM RECENT PALEONTOLOGICAL AND NEONTOLOGICAL DATA
从新的古生物学及今生物学资料看羽毛的起源与早期演化(英文)
(4)the early foreland flysch basin development stage in the Early-Middle Cretaceous;
4)早中白垩世为前陆早期复理石盆地演化阶段;
Paleocene-Eocene Tectonic Evolution in Central Tibetan Plateau
青藏高原中段古近纪早期古构造演化
The Evolution of the Dependent Origination in the Translation of the Early Buddhist Sutras
早期佛典翻译中佛教缘起思想的演化
Early X-ray Manifestations and Evolution of Chondromalacia of Patella
髌骨软骨软化症的早期X线表现及其演变过程
During the early stages of planetary evolution they served to sweep the solar system.
在行星演化的早期，他们用来清扫太阳系。
Later Triassic-Middle Jurassic Basin History of Qiangtang, Northern Tibet, China;
羌塘盆地晚三叠世—中侏罗世早期沉积盆地演化
The Evolution Study of Entrepreneurial Firm Networks: From Emerging to Early Growth Stage;
创业企业网络演化研究——从萌芽到早期发展
Influence of Mixing Parameters on Structure and Evolution of Early AGB Star
混合长参数对早期AGB星结构与演化的影响
Automatic Education: Historical Deduction on Early Educational Technology of China and America
自动化教育:中美早期对教育技术的历史演绎
Organizational Development and Changes of the Aim of Agricultural Association of China in the Early Years
中华农学会的早期组织演化与宗旨歧变
EARLY PRECAMBRIAN METAMORPHIC ROCKS AND EARLY EARTH CRUST EVOLUTION IN DAQINGSHAN, INNER MONGOLIA
内蒙大青山早前寒武纪变质岩和早期陆壳的演化
The Tectonic Characteristics and Evolution of the Middle Part of the Central Depression in Songliao Basin During the Early Cretaceous;
松辽盆地中央坳陷区中部早白垩世早期构造特征及其演化
The study also thought that harsh climate was one of the reasons for Human evolving to early Homo sapiens.
L2时期恶劣的气候变化可能是直立人演化为早期智人的原因之一。
The dicotyledons diverged at an early stage of their evolution into two main groups.
双子叶植物在演化的早期阶段就已分化为两大支派。
The Dawn of Early Nations:Evolution of Society and Politics of Liangzhu Culture;
早期国家之黎明─—兼谈良渚文化社会政治演化水平
He says silk production was long thought to have evolved from glands found on the legs of early spiders.
他说蛛丝一直被认为是从早期蜘蛛腿上的腺体逐渐演化而来的.