查询词典 polar

The invention is characterized in that phthalide of general formula, wherein n and X have the meaning cited in the description, is reacted with nitrogen heterocycles of general formula: H-Z, wherein Z has the meaning cited in the description, or with nitrogen heterocycle metal salts of general formula in the presence of an aprotic polar diluent and optionally in the presence of a basic auxiliary reaction agent.

本发明涉及制备通式的2－杂环基甲基苯甲酸衍生物的新的方法，其中n、X和Z具有说明书中给出的意义，该方法提供高收率和高纯度，其特征是，通式的2－苯并呋喃酮，其中n和x具有说明书中给出的含义，与通式的氮杂环：H－Z，其中Z具有说明书中给出的意义，或与通式的氮杂环的金属盐在质子惰性极性稀释剂中并任选在碱性反应助剂存在下反应。

Macro-porous-type and non-polar adsorption resin AKS-W is an ideal adsorbent for the extraction of the effective components in Plumula Nelumbinis.

结论大孔型非极性吸附树脂AKS-W对莲子心中有效成分是一种较为理想的分离介质。

Poleward ozone flux increased because of the polar vortex breakup.

由于增温时极涡的减弱和崩溃，平流层向极地的臭氧通量增大。

It is discovered that isomerization of 2,10-epoxypinane produce mainly perillyl alcohol in 353 ~ 363 K catalyzed by acid catalysts in strongly polar protonic solvent.

结果表明：在酸催化剂存在下，强极性非质子溶剂中，2，10-环氧蒎烷于353-363 K可定向重排生成紫苏醇。

Preparation of polymeric nanocapsules by radiation induced miniemulsion polymerization (1) Polystyrene nanocapsules with liquid core were prepared by ~(60)Coγ-ray radiation induced miniemulsion polymerization, in which N-vinyl pyrrolidone was used as polar monomer.

本文首先通过辐射引发细乳液聚合制备了聚苯乙烯纳米微胶囊，并从热力学与动力学两方面研究了影响纳米微胶囊形貌的因素；之后使用反相乳液聚合制备了磁性复合微球和磁性复合空心微球，并研究了有关影响因素。

Life in the polar oceans is limited to the comparatively small number of species that have succeeded in adapting to the constant cold, like this rayed anemone found in the ocean around Antarctica.

生活在极地海洋的动物是受到限制的，比较而言少数的动物能够适应在持续寒冷的极地海洋，例如：这种带有边花的彩色的海葵可以南极洲的海洋周围找到。

As one of the five members of the Permanent Security Council in UN, China is the back- stone force that actively upholds the world peace. Notably, China is paying more and more attention to build its image and status of responsible power in the world wide, as the refound development of the world multi-polar trend that especially quickens its pace after the Cold War.

作为联合国五大常任理事国之一，中国是积极维护世界和平的中坚力量，特别是冷战后，随着世界多极化趋势的不断发展，中国更加注意在全世界树立自己的负责任的大国形象和大国地位。

India and China have frequently reiterated their commitment to the development of a cooperative multi-polar world order.

印度和中国都多次重申对于发展互利合作的多极世界新秩序的承诺。

The effects of the type and content of vinyl monomer containing polar group on the flame retardance of PP were studied.

着重探讨了含极性基团的乙烯基单体种类及用量等因素对PP阻燃性的影响。

If the shoulder joint is also replaced by a revolute joint, an arm with a polar geometry is formed.

如果肩关节也取而代之的是一个旋转接头，手臂与极几何形成。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。