牙形化石 的英文怎麼說
中文拼音 [yáxínghuàdàn]
牙形化石
英文
conodonts-
Ch. 2 biostratigraphy features, distribution and assemblage of three group fossils from many of the 7 geological setions, including conodont, coral and foraminifera fossils, have been comprehensively discussed. and a series of fossil assemblages can be recognized
生物地層研究綜合各剖面上獲得的古生物資料，按牙形刺、珊瑚和有孔蟲化石等三大類論述了它們的特徵、分佈和組合特點，進而在魯班石地區劃分建立了牙形刺生物化石組合帶。The author ultimately achieves the following goals : 1. studied the nongba section, and correlated many sedimentary information and pteridophyta, graptolite, conodont and radiolaria etc. palaeontology fossils. study on palaeontology paleontology fossils of nongba section is carried out
筆者最終取得的研究成果如下： 1 、對弄巴剖面進行了詳細的剖面測制工作，收集了大量沉積學方面的資料及一批植物、筆石、牙形石、和放射蟲等古生物化石。There are 25 genera and 47 species of conodont, 4 genera and 6 species of coral and some foraminifera. ch. 4 biostratigraphical regions based on the study on the conodont, coral and foraminifera fossils in research area, it was discovered that the biota features are resemble to the south china. so a conclusion can be drawn that the research area and south china belong to the same biogeographical region
生物地層分區本文通過對牙形刺、蜒類、珊瑚等化石的對比研究，發現研究區的生物群特徵與華南區生物群相近，這表明在該區早、晚石炭世與華南區及東古特提斯區同屬一個生物地理區系。The conodont fauna of late permian to early triassic from yangou section in leping area, jiangxi province was discussed in this paper. all of the conodont individuals founded in this section were listed in a figure. according to the distribution of the important conodont elements, this section was divided into three conodont zones from the upper permian to the lower triassic
討論了贛中樂平地區沿溝剖面上二疊統至下三疊統地層的牙形石動物群，列出了牙形石的各個形態屬種在地層中的分佈及其數量變化。根據特徵牙形石分子的地層分佈，將該段地層自下而上劃分為3個牙形石帶，分別是：As the plaque gets harder and thicker, it becomes what is known as dental calculus or tartar, a hard calcified layer that is irtually impossible to shift with normal brushing, you would hae to get the dental hygienist to do it
菌斑變硬增厚，即形成所謂的牙垢或牙石，它是一層很硬的鈣化層，一般不能通過刷牙去除，必須得請牙醫處理。Measuring some 50 feet ( 15 meters ) in length, the bone - crunching predator represents one of the largest marine reptiles ever known, according to a team led by jorn hurum of the natural history museum in oslo, norway
一頭巨大的史前海洋爬行動物在遙遠的北極島嶼被化石獵人發現，它的身形超過駝背鯨，具有黃瓜般的長度的牙齒Within 24 hours, plaque can harden to form tartar, which can only be removed by a professional
24小時內，牙垢膜便會硬化，形成牙石，必需由牙醫清除。However, this conclusion was based on the evidence from some highly derived euconodont taxa ; the degree of their plesimophic to basal euconodonts still remains in question
然而，這些結論是通過對高度進化的真牙形石屬的研究獲得的它們在多大程度上代表了原始真牙形石還存在疑問。We have carried out th / u dating on intercalated calcite samples. the results show that the capping flowstone layer is of an age of 94 ka, and the second one 220 ka. the fossil - bearing deposits which are bracketed by the two flowstone layers should be of an age between 94 and 220 ka
新生碳酸鹽巖與骨化石的鈾系測年結果表明：該地點覆蓋含人牙化石堆積的表層鈣板在約94ka以前開始形成，堆積疊壓的鈣板年代為約220ka ，人牙化石的年代應介於兩者之間。A massive prehistoric sea reptile that was longer than a humpback whale and had teeth the size of cucumbers has been found by fossil hunters on a remote arctic island
一頭巨大的史前海洋爬行動物在遙遠的北極島嶼被化石獵人發現，它的身形超過駝背鯨，具有黃瓜般的長度的牙齒Everybody need brush his or her teeth in order to keep teeth clean and be far away from diseases. but however they try to brush their teeth, dental plaque which turns into tartar on the teeth by long - time calcification of mineral in saliva and especially appears around gums can not be brushed away
我們每個人都要刷牙，這是為了讓牙保持清潔，不得疾病，可是再認真的刷牙，也無法刷掉肉眼看不見的菌斑，這些菌斑經過唾液中礦物質的長期鈣化就形成了牙石附在牙，尤其在牙緣處最多見。分享友人