This character differs from other Ordovician source rocks elsewhere in the world such as Kukersite Kerogen in Estonia and Guttenburgen type source rocks in USA.
其组成主要有底栖宏观藻类、线叶植物、隐孢子、疑源类和几丁虫等。
单词 | Ordovician |
例句 |
英语例句库
This character differs from other Ordovician source rocks elsewhere in the world such as Kukersite Kerogen in Estonia and Guttenburgen type source rocks in USA. 其组成主要有底栖宏观藻类、线叶植物、隐孢子、疑源类和几丁虫等。 It's a residual mountain(unaka) which were a set of thrust blocks under the erosion unconformity.It's reservoir pore space is a fracture-vug-pore system of Ordovician carbonate karst. 该气藏的构造为道冲构造侵蚀而成的残丘山,储集体为奥陶系碳酸盐岩溶蚀缝洞孔体系,流体呈层状分布(集中分布于奥陶系峰峰组和上马家沟组上段)。 From 2003 to 2004, we collected a large amount of Nautiloid and Graptolite fossils in upper metamorphic formations of Mayigangri area and determined the age to be middle and Late Ordovician-Silurian. 在羌塘南部地区发现有可靠化石依据的早古生代地层存在尚属首次。 声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。
原声例句
跟马修学英语 But some also believe that a gamma ray burst was responsible for the Ordovician extinction around 455 million years ago. 但是也有一些科学家认为伽玛射线爆发可能是四十五亿年前奥陶纪大灭绝的罪魁祸首。 万物简史 The Ordovician (440 million years ago) and Devonian (365 million) each wiped out about 80 to 85 percent of species. 奥陶纪(44000万年以前)和泥盆纪(36500万年以前)分别消灭了大约80%——85%的物种。 AsapSCIENCE - Nature 440 million years ago was the The Ordovician extinction. 4.4亿年前是奥陶纪大灭绝。 PBS Eons | fauna&flora This is known as the Great Ordovician Biodiversification Event. 这被称为奥陶纪生物多样性大 事件。 Journeys Through Geologic Time Before the Ordovician, terrestrial life was probably limited to microbes. 在奥陶纪之前,陆地生命 可能仅限于微生物。 Journeys Through Geologic Time 470 million years ago, in the Ordovician Period, the first plants began to live on land. 7亿年前,在奥陶纪, 第一批植物开始生活在陆地上。 PBS地球-动物趣闻 And there are extensive black shale deposits in places like China and northern Africa, dating to the late Ordovician. 在中国和北非等地有大量黑色页岩矿床,可追溯到晚奥陶世。 Life Noggin The very first mass extinction we know of is the Late Ordovician extinction that took place 450 million years ago. 我们所知道的第一次大灭绝是发生在 4.5 亿年前的晚奥陶世大灭绝。 PBS地球-动物趣闻 By the time the Cambrian had segued into the Ordovician, cephalopods had entered a golden age. 当寒武纪进入奥陶纪时,头足类动物进入了黄金时代。 PBS地球-动物趣闻 The Ordovician endoceratids cephalopods were the biggest animals of their time, reaching an impressive 6 meters in length. 奥陶纪的头足类动物是当时最大的动物,身长可达 6 米, 令人印象深刻。 PBS地球-动物趣闻 And as the Ordovician progressed, cephalopods began to leave the shallows to explore the open ocean. 随着奥陶纪的进展,头足类动物开始离开浅滩探索开阔的海洋。 PBS地球-动物趣闻 Plants first began colonizing the land during the Ordovician period, about 470 million years ago. 大约 4.7 亿年前的奥陶纪时期,植物首先开始在这片土地上定居。 PBS地球-动物趣闻 These spores were dated to 462 million years ago - during that cooling event that took place in the Ordovician Period. 这些孢子可追溯到 4.62 亿年前——在奥陶纪发生的那次冷却事件期间。 PBS地球-动物趣闻 This fish lived in the coastal waters of what's now Bolivia, during the Ordovician Period, some 470 million years ago. 大约 4.7 亿年前的奥陶纪时期,这种鱼生活在现在玻利维亚的沿海水域。 PBS地球-动物趣闻 The Ordovician period also saw the advent of more active suspension feeders, like the giant, filter-feeding anomalocarid Aegirocassis. 奥陶纪时期还出现了更活跃的悬浮式捕食者,例如巨大的滤食性奇虾 Aegirocassis。 PBS地球-动物趣闻 Heading into the Ordovician Period, around 485 million years ago, eocrinoids diversified into thousands of forms. 进入大约 4.85 亿年前的奥陶纪时期,类分泌物多样化为数千种形式。 PBS地球-动物趣闻 The fossils they found were about 488 million years old -- which put them in the Ordovician. 他们发现的化石大约有 4.88 亿年的历史——这使它们处于奥陶纪。 万物简史 But his first love is a type of marine creature called trilobites that once teemed in Ordovician seas but haven't existed for a long time except in fossilized form. 但是,他最钟爱的是一种名叫三叶虫的海生动物。那种动物一度充满奥陶纪的海洋,但早已不复存在,除了以化石的形式。 PBS地球-动物趣闻 But, during the Late Ordovician, a second suborder of sea scorpion emerges in the fossil record — the Eurytperina. 但是,在晚奥陶世期间,化石记录中出现了海蝎的第二个亚目——Eurytperina。 PBS地球-动物趣闻 The fossil spores in Argentina weren't just from one kind of plant, but from at least 5 different kinds - a little community of Ordovician plants. 阿根廷的孢子化石不仅来自一种植物,而且来自至少 5 种不同的植物——奥陶纪植物的一个小群落。 |
随便看 |
|
英语例句辞典收录519880条英汉例句词条,基本涵盖了全部常用单词的造句方法及例句,是英语学习的有利工具。