Not only did mammals sweep across the planet after K-T, but sharks expanded across the seas, explained American Museum of Natural History vertebrate paleontologist Jack Conrad.
美国自然历史博物馆脊椎古生物学家Jack Conrad解释说，k - T大灭绝之后，不但哺乳动物开始主宰地球，鲨鱼也开始在海洋中扩张。
Then, in 1991, researchers discovered a 120-mile-wide, 1.5-mile-deep crater called Chicxulub in Mexico of the same age as the K-T boundary.
随后，在1991年，研究人员在墨西哥发现了与K-T界限在同年代的一个直径120英里宽，1.5英里深的陨石坑，被称为Chicxulub。
Hau K t, Wen Z, Cheng Z. Structural Equation Model and Its Applications (in Chinese). Beijing: Educational Science Press, 2004.
侯杰泰，温忠麟，成子娟。结构方程模型及其应用。北京：教育科学出版社，2004。
The Re Os isotope composition is obviously different from the rocks of the continental crust, but similar to the K T boundary sediment, and close to the meteorite.
铁锰结壳的铼-锇同位素组成明显有别于大陆地壳岩石，和K- T界线沉积物相似，接近陨石值。
The problem for getting K T point of nonlinear programming by combined homotopy interior point method under linearly independent constraint qualification is discussed at [1].
文献 [1 ]讨论了在线性无关的约束规定下 ，用组合同伦内点法求解非线性规划的K T点问题。
The theoretical analysis shows the algorithm is global convergent to the K-T point under common condition.
从理论上分析，在一般条件下，算法全局收敛于问题的K T点。
Based on expatiation upon the k, t indices calculating method in lots of current maneuvering ship text book, this article presents a new analysing method with curve simulating.
在阐述了现行《船舶操纵》教材中关于船舶操纵性指数(K, T)计算方法的基础之上，提出运用曲线拟合的分析方法。
Moreover, we get the relationship between the K-T point of the primal problem and the stationary point of the unconstrained problem.
并且建立了原问题的K-T点与等价无约束问题的稳定点之间的关系。
Using K-T condition and the aggregation properties of KS function, a multi-constraints linear programming problem is become a single constraint linear programming problem.
提出了一种求解线性规划问题的新方法：利用K—T条件及KS函数的凝聚特性，将多约束线性规划问题凝聚为单约束优化问题进行求解。
We prove that when the homotopy map is a regular map, the K-K-T point obtained from this homotopy method must be a local optimal solution by choosing proper homotopy equation.
证明了同伦映射为正则映射的条件下，选取合适的同伦方程，用此同伦方法得到的K-K-T点一定是问题局部最优解。
As such, these puny foraminifera serve as very distinct tags of when the K-T extinction event started.
因此，当K-T灭绝事件开始时这些微小的有孔虫充当十分鲜明的标签。
K. T. A. WHOLESALE LTD. is a foreign buyer from Malta, need to purchase products of ceramics etc. categories.
该公司是一家来自马耳他的买家，需要购买的产品类别包括：陶瓷等行业。
The K-T process of urea-based compound fertilizer is presented.
介绍尿基复合肥K T技术工艺流程；
The K-T process of urea-based compound fertilizer is presented.
介绍尿基复合肥K T技术工艺流程；
应用推荐