您要查找的是不是:
- geologic age determination 地质年代测定
- A remnant or trace of an organism of a past geologic age, such as a skeleton or leaf imprint, embedded and preserved in the earth's crust. 化石埋置并保存于地层中的古生物遗体、遗物和其生活遗址,如骨骸、叶子的印痕等
- Age determination data indicate episodic crystallization of uranium minerals. 年龄测定数据表明,铀矿物有着不同期的结晶。
- A remnant or trace of an organism of a past geologic age,such as a skeleton or leaf imprint,embedded and preserved in the earth's crust. 化石埋置并保存于地层中的古生物遗体、遗物和其生活遗址,如骨骸、叶子的印痕等。
- The rock mass of syenite porphyry in the north part of Babaoshan coal mine was demonstrated on its lithologic characters,geologic age and occurence. 从岩体的岩性、时代、产状等方面,论证了八宝山煤矿北部的正长斑岩体为一岩盖,下部找煤前景可观,可在井下实施巷探和定向钻探找煤,以延长矿井寿
- The fossil hominids were diagnosed as early Homo sapiens, with a cultural age of Middle Paleolithic, and geologic age of early Late Pleistocen. 产出丁村人及相应石器的一套地层被命名为丁村组。
- This study deals with age determination and age distribution of muskrat populations. 利用新疆等地区的597号麝鼠头骨标本和其它材料,研究种群年龄组成。
- In conclusion, both of the diameters and numbers of statoconia may not be appropriate index in age determination of hagfish. 由以上结果总结, 盲鳗耳石的直径与数量并不适于作为盲鳗定龄的型值。
- Personal identification,as one of the most important tasks of medical jurisprudence,includes stature estimation,sex estimation and age determination. 个人识别在法医实践中占有重要地位,主要包括判定种族、推断身高、判定性别和推算年龄。
- In 1992, colleagues and I were invited to Longgupo to provide a reliable age determination and to help understand the palaeoanthropology. 1992年,我的同事们和我应邀到龙骨坡提供精确的断代,并帮助解释其在古人类学上的性质。
- In this thesis the progression of the study of lumbar vertebrae in stature estimation, sex estimation and age determination were discussed. 本文着重从身高推算、别判定和年龄判定三个方面综述了近年来腰椎在法医人类学领域的研究进展。
- In order to enhance the accuracy of skeletal age determination, further investigation for appropriate methodology should be undertaken. 因此,为了提高骨龄鉴定结论的精确度,还需进行更多方法学的研究。
- In the present work, we examined the statoconia in the inner ear of the hagfish Paramyxine nelsoni intense to explore it as a useful index in hagfish s age determination. 本研究以纽氏副盲鳗为材料,检视存在于其内耳的耳石是否可能成为为盲鳗定龄的依据。
- In the present work, we examined the statoconia in the inner ear of the hagfish Paramyxine nelsoni intense to explore it auseful index in hagfish’s age determination. 本研究以纽氏副盲鳗为材料, 检视存在于其内耳的耳石是否可能成为为盲鳗定龄的依据。
- Conclusion Our study seems to be feasible in establishing the estimation standard for skeletal age determination using developmental metaphysis and anthropometry. 结论根据发育等级特征及测量学方法建立骨龄评估标准可行,可望得到推广。
- Anthropocene emphasizes the core effect which human bring to geology and ecology.As a new geologic age, whether it is valid or not is still an argumentation. 人类世强调人类在地质和生态中的核心作用,这也是重要的,但作为新的地质时代,它是否能在科学上站得住脚,还需要进行论证。
- Problems existed in the Antarctic krill age determination were introduced and the methods used in the krill population age structure analysis were reviewed. 本文对国际上有关南极磷虾(Euphausiasuperba)的寿命和年龄鉴定研究的现状、研究过程中所存在的困难和问题进行了分析和探讨,对各种不同的磷虾年龄鉴定方法的特点和存在的问题进行了评述
- By the known data of isotope age determination, Nanhuaian time-structure frame was principally set up with the top boundary about 700 Ma and bottom about 800 Ma. 综合已有同位素测年数据,初步建立起南华纪年代构造格架,确立南华纪底界年龄为800 Ma左右,顶界年龄为700 Ma左右。
- The exact age determination of the early Pleistocene hominid remains is important for understanding the origin, dispersal and evolution of early human in China. 摘要我国早更新世古人类遗址时代的确定对于认识早期人类起源、扩散与演化具有重要意义。
- It is characterized by high metallogenic elements and high heavy minerals and altered fractural rock type Au ore body(Yuershan).Isotopic age determin... 断层倾角大于层状矿脉系,估计在深部会切错矿体,因此在断层深部上盘应存在着找寻工业矿体的远景。