查询词典 ring

The Ring of Fire goes all the way from the Philippines past Japan to China and Kamchatka in Russia, to the Aleutians in the United States down through Alaska and across Cascadia in the Pacific Northwest, joining up with the San Andreas down the West Coast to Mexico and into South America, and another part of the ring goes through Indonesia, Scholz said.

Scholz指出：环太平洋地震带以菲律宾为起点、经日本、中国、俄罗斯的堪察加半岛，美国的阿留申群岛，向下延伸至阿拉斯加，穿越太平洋西北部的卡斯卡底古陆，与圣安地列斯群岛汇合，沿着西海岸向下直至墨西哥，进入南美洲，该地震带的另一部分则要穿越印度尼西亚。

Castellano has threatened to sell or destroy the 3.23-carat ring, even though the couple agreed the ring would be returned to Kuehnen if their engagement was ever broken off, the complaint says.

投诉诉讼书中称：未婚夫Castellano威胁要卖掉或毁掉那颗3.23克拉的戒指，虽然两人达成过协议如果订婚破除那么这枚戒指要还给Kuehnen。

In [8, 10, 11], Hwang, Chen, and Wright proposed the directed version of the undirected chordal ring network and derived the diameter of a directed chordal ring network.

在文献[8， 10， 11]中，黄光明老师、陈尚宽学长、以及Wright，将「无向的弦环式网路」推广成「有向的弦环式网路」，并给出计算「有向的弦环式网路」的直径的方法。

The author found that the chromone ring could be cleaved at high temperature in PPA, and the change of the ratio of ring-opened product versus the target one with the change of reaction time and temperature was investigated in details.

我们采用了两条不同的合成路线合成了第Ⅳ类化合物，对部分反应条件进行了优化，在研究过程中发现了色酮化合物在高温下的开环反应及多聚磷酸的水解作用，并对前者进行了详细研究了，获得了不同反应温度和时间下未开环产物和开环产物的比例，得到了制备相应的未开环产物和开环产物的最佳反应条件。

The clinoid segment of ICA was surrounded by two fibrous rings:a distal ring formed by the superficial dural layer and a proximal ring formed by the deep dural layer.

颈内动脉穿出海绵窦上壁时，浅、深两层硬膜分别形成远侧硬膜环和近侧硬膜环。

The distal dural ring is a thick membrane that fuses with the adventitia of the ICA and its thickness is(0.52±0.07)mm,The proximal dural ring loosely surrounds the entire length of clinoid segment of ICA and admits a variable number of veins from the cavernous plexus that accompany this segment.

远侧硬膜环厚而坚韧，厚度为(0.52±0.07)mm，近侧硬膜环薄而松弛，厚度为(0.22±0.06)mm，在二者之间有海绵窦的静脉丛突入。

This dissertation investigates the construction of pseudo-random sequences (pseudo-random numbers) from elliptic curves and mainly analyzes their cryptographic properties by using exponential sums over rational points along elliptic curves. The main results are as follows:(1) The uniform distribution of the elliptic curve linear congruential generator is discussed and the lower bound of its nonlinear complexity is given.(2) Two large families of binary sequences are constructed from elliptic curves. The well distribution measure and the correlation measure of order k of the resulting sequences are studied. The results indicate that they are "good" binary sequences which give a positive answer to a conjecture proposed by Goubin et al.(3) A kind of binary sequences from an elliptic curve and its twisted curves over a prime field F_p. The length of the sequences is 4p. The "1" and "0" occur almost the same times. The linear complexity is at least one-fourth the period.(4) The exponential sums over rational points along elliptic curves over ring Z_ are estimated and are used to estimate the well distribution measure and the correlation measure of order k of a family of binary sequences from elliptic curves over ring Z_.(5) The correlation of the elliptic curve power number generator is given. It is proved that the sequences produced by the elliptic curve quadratic generator are asymptotically uniformly distributed.(6) The uniform distribution of the elliptic curve subset sum generator is considered.(7) We apply the linear feedback shift register over elliptic curves to produce sequences with long periods. The distribution and the linear complexity of the resulting sequences are also considered.

本文研究利用椭圆曲线构造的伪随机序列，主要利用有限域上椭圆曲线有理点群的指数和估计讨论椭圆曲线序列的密码性质——分布、相关性、线性复杂度等，得到如下主要结果：(1)系统讨论椭圆曲线-线性同余序列的一致分布性质，即该类序列是渐近一致分布的，并给出了它的非线性复杂度下界；(2)讨论两类由椭圆曲线构造的二元序列的&良性&分布与高阶相关性(correlation of order κ)，这两类序列具有&优&的密码性质，也正面回答了Goubin等提出的公开问题；(3)利用椭圆曲线及其挠曲线构造一类二元序列，其周期为4p(其中椭圆曲线定义在有限域F_p上)，0-1分布基本平衡，线性复杂度至少为周期的四分之一；(4)讨论了剩余类环Z_上的椭圆曲线的有理点的分布估计，并用于分析一类由剩余类环Z_上椭圆曲线构造的二元序列的伪随机性；(5)讨论椭圆曲线-幂生成器序列的相关性及椭圆曲线-二次生成器序列的一致分布；(6)讨论椭圆曲线-子集和序列的一致分布；(7)讨论椭圆曲线上的线性反馈移位寄存器序列的分布，线性复杂度等性质。

Compared with the double bond of cyclopentene ring, the double bond of the norbornene ring has much more lower activation energy in the hydrogenation and the main intermediate product is 14,15-DHTCPD.

非晶态合金催化剂晶化过程的原位分析结果表明，在热处理温度低于150°C条件下其结构基本保持稳定，而高于450°C条件下热处理后晶化度大于90%，600°C以上热处理后完全晶化。

The double bond in norbornene ring of TCPD was easily saturated at a low temperature, and an intermediate 12,13-dihydrotricyclopentadiene (12,13-DHTCPD) was formed. Higher temperature and hydrogen pressure were required for the saturation of remaining double bond in cyclopentene ring to generate a completely hydrogenated compound tetrahydrotricyclopentadiene.That is to say, the reaction occurred via the TCPD→12,13-DHTCPD→THTCPD route.

采用气质联用、红外光谱和核磁共振对加氢产物进行表征，发现在加氢反应中TCPD的降冰片烯双键首先被饱和，生成中间产物12，13-二氢三环戊二烯(12，13-DHTCPD)，残留的环戊烯双键需要在更高的温度和氢压下反应生成四氢三环戊二烯，即反应按照TCPD→12，13-DHTCPD→THTCPD的途径进行。

The bacterial, mammalian and plant cytochrome P450s involved in metabolism of herbicides are reviewed in this paper. The action modes of cytochrome P450s on herbicides including dealkylation, ring-methyl hydroxylation and aromatic ring hydroxylation etc are summarized.

本文综述了代谢除草剂的细菌、哺乳动物和植物细胞色素P450酶系，概述了细胞色素P450酶系参与除草剂代谢的作用方式：脱烷基化作用、环甲基化羟基化作用和芳环的羟基化作用等。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。