查询词典 ring in

The ligand of HL3 differs from HL1 and HL2 in having an ethyl group not methyl group on the triazole ring and having a thienyl group on the substituted amino group, meanwhile there are two kinds of 3 molecules in the crystal structure.

在化合物3中配体与化合物1和化合物2的不同，同时其一个结构单元中还存在两个结构几乎相同的分子，这两个分子只在键长、键角上有轻微差别。

Eight provenances of 19-year-old Picea koraiensis Nakai from the provenance trials of Maoershan (45°20'N, 127°30'E), Liangshui (47°10'N, 128°53'E) and Jiagedaqi (50°24'N, 124°07'E) in Northeast China were investigated to analyze the genetic variation in growth characteristics and wood characteristics (tracheid length, tracheid diameter, tracheid wall thickness, annual ring width as well as wood density).

以来自中国东北地区帽儿山(45°20'N， 127°30'E)、凉水(47°10'N， 128°53'E)和加格达奇(50°24'N， 124°07'E)的19年生红皮云杉种源试验林8个种源为材料，测定和分析了种源间高生长、径生长和材质性状(管胞长度、管胞直径、年轮宽度和木材密度)的遗传变异。

In this dissertation, two series of rare earth initiators: rare earth tri (2, 6-di-tert-butyl4-methylphenolate) and rare earth calixarene complex have been developed to ring-opening polymerize 2, 2-dimethyltrimethylene carbonate, trimethylene carbonate and ε-caprolactone at mild conditions. Both the polymerization features and mechanisms are discussed in details.

本论文为环碳酸酯、内酯的开环聚合开发了两类新型低毒性稀土催化剂：三(2，6-二叔丁基-4-甲基苯氧基)稀土配合物和对叔丁基杯芳烃稀土配合物，都可以在温和的反应条件下单组分引发2，2-二甲基三亚甲基环碳酸酯、三亚甲基环碳酸酯和ε-己内酯聚合，合成各种分子量的均聚和共聚材料，考察了催化剂结构、聚合条件等对聚合的影响，深入研究了聚合机理。

Karatsu take high-speed, and then switch to high-speed Beijing-Tianjin-Tanggu, in Yixing Bu under the high-speed, and then take the Outer Ring Road in Tianjin, more than 10 minutes after taking Tsubo high-speed, it is up!

走唐津高速，然后转京津塘高速，在宜兴埠下高速，然后走天津外环线，十多分钟后，走津保高速，就到了！

Containing cyano groups in bridge vinylene instead of phenyl rings showed especial stability and 7 containing methoxy groups in thecentral phenyl ring showed significant instability.

这说明除了取代基引起的电子效应外，取代基位置和空间效应也是影响M-PPV稳定性的重要因素。

Vladislav Borodin, head of the traffic-monitoring group Yandex, describes several days in December 2007 when the three concentric ring roads in central Moscow 'were frozen from...the morning until 3 a.m.

交通监测组织Yandex的主管鲍罗丁描绘了2007年12月有几天的情形，莫斯科中心地带的三条环路从早上直到第二天凌晨3点都堵得死死的，队伍长达40公里。

It is suggested that attention be given to quality of incoming water from the upper reaches while strict measures be taken to control the intensity of land exploitation in hydraulically sensitive areas and build up a ring-structure land use pattern in the waterhead region by means of land use and socio-economic driving forces.

建议在开展平原河网地区水源保护工作中，应在关注上游来水状况的同时，从土地利用及其社会经济驱动两方面控制水文敏感区域土地开发强度，构筑水源地圈层土地利用格局。

Mrs. Youse was carrying a valuable sapphire ring wrapped in a handkerchief in her purse

尤斯太太拿的手提包内放着一只裹在手帕里的贵重蓝宝石戒指。

Join " PC center is talked " ring down the curtain, microsoft will examine oneself resource afresh, in order to chase the rival in cloud computation domain.

加入&PC中心论&落幕，微软将重新审阅自身资源，以追赶云计算领域中的对手。

In new network Hangzhou on March 11 report (Wang Enmin of reporter Zhong Xin's trainee) recently, by domestic Internet the first net fills business treasure to call together hold with " capital market opportunity " those who give priority to a problem " industry website the 5th round table " in Hangzhou ring down the curtain successfully.

中新网杭州 3月11日电(记者钟新实习生汪恩民)近日，由国内互联网第一股网盛生意宝召集举办的以&资本市场机遇&为主题的&行业网站第五次圆桌会议&在杭成功落幕。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。