查询词典 U-shaped

On the basis of the analysis to mineralizing system texture, the rock- and ore-forming ages of the granite-porphyry and related molybdenum ores were precisely redefined by the SHRIMP zircon U-Pb and molybdenite Re-Os dating method.

在对矿区矿化系统结构研究的基础上，应用锆石SHRIMP U-Pb法和辉钼矿Re-Os同位素测年法对成岩和成矿进行精确定年。

According to U-Pb dating on xenotime and monazite, the mineralization took place during 112 to 97 Ma and last for at least 16 million years.

磷钇矿和独居石的U-Pb定年结果表明，成矿年代为112~97Ma，成矿作用可能持续了16Ma以上。

The composi tional change profiles of monazite demonstrate a heterogeneous distribution of e lements La, Ce, Nd, P, Th, Si, Ca and U. This was caused by the differences in geological environments, temperatures, pressures and compositions of the hy drothermal solutions.

根据微区剖面(0.18mm)元素分布曲线，指出了La、Ce、Nd、P、Th、Si、Ca和U等元素表现出8～10个微环带成分不均匀分布的特点，并认为成矿溶液的地质环境、温压和微量元素含量变化是不均匀分布的主要原因。

In the end, it is further developed of the inverse U hypothesis from monocycle condition to multi-cycle condition with a new hypothesis, which is called cyclical fluctuation of regional disparity.

在新古典经济学得出的增长轨迹基础上，利用简化的两地区逻辑曲线初步证明"倒U假说"的成立；并进一步讨论这一假说在多周期情形下的一个拓展，即地区差距的周期波动。

You don't want to give your baby a beautiful and well thought out full name, only to later discover that the monogrammed handkerchiefs will read "P.I.G" or Y.U.K.

"你不想让你的小孩一个美丽而周详的全称，只是后来发现monogrammed手帕将改为"p.i.g"或"y.u.k。

SHRIMP technique is applied to the age determination of Shuiquangou alkalic complex. Zircons from monzonite and syenite of the complex in the Dongping and Hougou gold mining district are dated at age of (390± 6) Ma and (386±6) Ma, respectively with U-Pb method. Rock-forming times of the complex is confidently constrained in the Late Caledonian-Early Hercynian period.

采用先进的SHRIMP测年技术对河北水泉沟碱性杂岩体进行了年龄测定，获得东坪金矿区水泉沟岩体二长岩锆石U-Pb年龄为(390±6)Ma，后沟金矿区水泉沟岩体正长岩年龄(386±6)Ma，比较可信地确定了水泉沟岩体的成岩时代为晚加里东期－早海西期。

High transmission of U、V lights transmission rate of SDI Mylar film is 90%, ordinary glass is 85% and common Mylar film is ......

U、V光透射性高（SDI麦拉膜的透射性为90%左右，普通玻璃为85%，而一般麦拉膜为60%左右）。

And let U be an open neighborhood of M in V and Δn be the n dimensional standard simplex in R n.

设U是M在V中的某开邻域且Δn 是Rn 中n维标准单形。

A shell graph of order n denoted by H(n,n-3) is the graph obtained from cycle C_n of order n by adding n- 3 chords incident with a common vertex say u.

一个有n个顶点的贝壳图H(n，n-3)，是通过在顶点数为n的圈C_n上一个公共点u上增加n-3条边得到的图。

In [29], the author gave that let G be a 2-connected graph with order n and S ≥ t, if |N ∪ N|≥ n - t for any nonadjacent vertices u and v in G, then G is pancyclic or n = 2t, G ≌ K_.

在[29]中，作者给出定理：设G是一个n阶2-连通图，且δ≥t，若对G中的任意两个不相邻的点u和v有|N∪N|≥n-t，那么G是一个泛圈图或n=2t，G≌K_。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。