查询词典 ring-pull can

PTMC and PDTC can be prepared by ring-opening homopolymerizations of trimethylene carbonate and 2,2-dimethyltrimethylene carbonate respectively.

PTMC、PDTC主要由三亚甲基环碳酸酯及2，2-二甲基三亚甲基环碳酸酯开环均聚合制备。

This turnable can be rotated in its own plane about its axis A. and is mounted on gimbals within a ring.

此内转台可在其自身平面内绕其轴线 A转动，并装在一个位于圆环里面的常平架上。

Testicular descent can get arrested at any point from the renal hilum to the external inguinal ring. Of all the undescended testes, 90% to 95% are low and in the inguinal canal.

双睾丸下降过程中可于肾门至腹股沟外环的任一点受到阻止，所有的隐睾中，90％－95％的位置较低，位于腹股沟管内。

To realize single longitudinal-mode of the fiber laser, a ring configuration is devised. The single longitudinal-mode operation is realized by using a fiber Bragg grating as wavelength-selective element and a unpumped 2m-loog erbium-doped fiber which can produce stading-wave saturation effects in the cavity, Its tunable wavelength range is 42 nm, the output power is more than 3.5 dBm and the stability is less than ±0.005 dB.

为了实现光纤激光的单纵模，提出了一种环形腔结构，采用可调谐光纤Bragg光栅作为波长选择器件，与2m未抽运掺Er光纤产生驻波饱和效应，在1.55m波长处形成42nm激光输出，输出功率大于3.5dBm，功率稳定性优于士0.005dB。

The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.

该合成路线与文献方法相比，反应条件较温和，也缩短了反应时间；(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性，取得了较好的结果（差向异构体比为80：20，产率95％左右）；(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件；(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应，控制反应条件，可使反应中消旋化减小到最小的程度。

By the study of the relationship between vegetation and spatial characteristics of UHI, the mainly spatial characteristics of UHI has been analyzed and it was:(1) The terrain of the suburbs is higher than the urban region, the gradient of the terrain height is small, and this geomorphological featrue is conducive to assemble of the heat, the UHI phenomenon of Changsha is obvious especially in the summer night;(2) The UHI distribution is similar to the outline of the urban construction. The LST of urban is 3-5℃ higher than the flat low areas close around the city, and 6-8℃ higher than further areas. The region which has the most obvious UHI phenomenon is the region surrounded by the second city ring road, and the UHI phenomenon gradually weakened from the city centre to suburb;(3) The impact of geomorphological character to UHI is notable, the relationship between vegetation index and UHI is Anti-related, it was indicated that the improvement of the vegetational status is very important to the elimination of UHI phenomenon, the implementation of the urban green land planning can reduce UHI effect.

通过分析长沙城市地区的土地覆盖、植被绿地状况与热岛空间分布状况的关系，揭示出研究区域UHI主要特征为：(1)从研究区域地表覆盖图发现，长沙市城区四周均有相对地势较高的山地，但地形梯度不大，接近四面环山的地貌特征，容易造成城区的热量聚集，有利于城市热岛效应的形成，使得长沙城区存在明显的热岛分布；(2)UHI分布与城市结构的轮廓相一致，长沙城区与地势相对平坦的近郊区的地表温度差异为3~5℃，与地势较高的周边远郊区的地表温度差异为6~8℃，长沙城区热岛效应与城市规划呈对应关系，热岛效应最显著的区域为二环线内，并从中心沿三环逐渐向郊区减弱；(3)地表覆盖类型对UHI的效应明显，长沙地区植被绿地状况与UHI呈现明显反相关分布，揭示出植被绿地对降低UHI具有重要的作用，大范围的绿地建设能有效降低UHI。

Rangeability, an d can b e con vertible t o reduced bore ty pe(60%, 40% reduce) by changing seal ring only.

调比大。并且仅仅改变阀座就可随意改变型等特点。

IT者网站提供英文翻译,未经授权请勿转载】 Yesterday, the 2nd APEC (Asia-Pacific is organized via closing) peak of medium and small businesses of Asia-Pacific of industrial and commercial advisory board can ring down the curtain formally, and in the time in two days, new discovery of civilian network reporter, the business circles old man in of all kinds success people in show to be nodded jointly fully.

&我在心里面可能也有一点变态一样，我把所有倒霉的事情当快乐去体会它，所以任何出现麻烦的时候，都是给我练功力的机会，看我能不能挺过去，假如真的挺不过去的那一刻，我就睡一觉，第二天早上又是新的一天。&

Arms of Wei of Liu of reporter of report from our correspondent reports: By Jin Dieyou dealer network holds " conduct financial transactions has method, be expert in making money --, online government serves " experience of countrywide large user can be in Guangzhou to ring down the curtain a few days ago.

本报讯 记者刘伟兵报道：由金蝶友商网举办的&理财有术，生财有道———在线治理服务&全国大型用户体验会日前在广州落幕。500家中小企业财务人员、业务人员、企业负责人、财经院校师生代表出席并共同体验基于互联网的在线治理服务。

You can call in or ring me up.

你可以来也可以给我打电话。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。