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polar     
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  极性
     Study on Polar Glass-Ceramics and Thin Film in BaO-TiO_2-SiO_2 System
     BaO-TiO_2-SiO_2系极性玻璃陶瓷及其薄膜研究
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     Ground State Energy and Effective Mass of Surface Polaron in Polar Crystals
     极性晶体中表面极化子的基态能量和有效质量
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     A Non-Steady State Analysis ior the Kinetics of Anionic Polymerization of Polar Monomer
     极性单体阴离子聚合反应的非稳态动力学分析
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     CALCULATION OF THE POLAR EFFECTS VALUES
     极性效应σ~*值计算
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     EXCESS VOLUMES OF MIXING OF BENZENE AND TOLUENE WITH SOME POLAR SOLVENTS AT 293.15K
     苯、甲苯与某些极性溶剂在293.15K的过量体积
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     Cloning and Characterization of Genes Coding for the Major Polar Tube protein and RAD37 Protein of Bombyx mori
     家蚕微孢子虫主要丝蛋白(PTP33)基因和RAD基因的克隆与分析
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     ON THE INFLUENCE OF POLAR SHIFT UPON TECTONIC PLATE BOUNDARIES
     移对板块构造的影响
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     CHARACTERISTIC OF CHANDLER'S POLAR WOBBLE
     Chandler矿移的特征
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     ON POLAR·PRODUCT OPERATOR A~(*-1)A
     关于·积算子A~(*-1)A
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     Application of Chien's Theorem to the Establishing of General Variational Principle in Polar Elasticity of Finite Deformation
     钱氏定理在有限变形矩弹性力学广义变分原理的应用
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  极地
     One of processes of the ozone depletion in the polar stratosphere is investigated by using an ab initio calculation at the B3LYP/6-311+G(3df) and the G2 levels.
     采用分子轨道从头算方法,在B3LYP/6-311+G(3df)和G2水平上研究了极地平流层臭氧损耗的一个基本过程.
短句来源
     POLAR CLOUD DETECTION AND ANALYSIS OF ETM+ lMAGE
     ETM+卫星影像极地云层检测及分析
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     Among 83 and 20 strain samples from polar soils and oceans, strain S1 was obtained for the highest trehalose conversion rate from maltose e of about 75.2%.
     按照确定的筛选方法,从两极地区采集的土壤菌样83株和极地海洋菌20株中最终筛选到一株产海藻糖合成酶转化率最高的一株菌S1,转化率为75.2%。
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     Design of the Chinese Polar Cryosphere Database System
     中国极地冰冻圈数据库设计
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     Research advances in the study of active substances from polar microorganism
     极地微生物活性物质研究进展
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  极性的
     Like Carbopack B, PMWCNTs modified with 5%(w/w) Carbowax 20M can be used to separate polar compounds.
     理论塔板数较小。 此外,和CarbopackB一样,PMwCNTs涂渍5%(w/w)的Carbowax 20M后可用来分离极性化合物,甚至是强极性的小分子有机酸。
短句来源
     The Au—S bond is a σ—strong polar covalence bond.
     Au—S间的键合是强极性的σ—配位键。
短句来源
     1. Investigation on the photo-induced reaction mechanism of benzoquinone/benzodioxolesbenzoquinone/benzodioxoles was studied in the unpolar solvent C6D6 and polar solvent CD3CN by CIDNP technique, which indicates thatSolvent separated ion radical pairs (SSIP) are formed in acetontrile and neural radical pairs (RP) are formed in benzene as evidenced by the emissive and enhanced absorptive polarizations of methylene protons in CD3CN and C6D6, respectively.
     在不同极性的溶剂(非极性溶剂C_6D_6,极性溶剂CD_3CN)中对苯醌/胡椒基类化合物体系进行了光-CIDNP研究,发现胡椒基亚甲基质子在乙腈中呈现发射极化信号,在苯中呈现增强吸收信号,认为该体系在乙腈中形成溶剂分离离子化自由基对(SSIP),在苯中形成中性自由基对(RP)。
短句来源
     and another is by the solvent extraction(B) only. We chose the low polar solvent ether to extract the low polar components in the dry fruit powder; and also chose the suitable factors such as the ratio between the solvent and the powder, temperature and time in microwave-solvent method.
     以低极性的乙醚作溶剂,比较微波-溶剂萃取法与单纯有机溶剂萃取法提取春砂仁中低级性油树脂的提取率,并对微波法中溶剂用量、萃取温度、萃取时间等3个因素进行了筛选,表明微波萃取法所取得的产率比有机溶剂法高14.3%;
短句来源
     The copolymer was soluble in CHCl_3, THF and strongly polar organic solvents such as DMF, DMSO and NMP at room temperature when the C-PEKK content is above 50(mol) %.
     当多氯PEKK结构单元含量大于50(mol)%吋,共聚物可溶解于氯仿及强极性的DMF、NMP等有机溶剂中。
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  polar
In this paper, it is proved that if λ and μ are β-spaces and λβ and μβ have also the signed-weak gliding hump property, then for any polar topology τ, ((λ, μ), τ) is always sequentially complete locally convex topological algebra.
      
In addition, our results demonstrated that AFLP could be used to construct DNA fingerprints of polar clones at a large-scale level and to determine genetic relationships of poplar varieties.
      
Stochastic differential equations with polar-decomposed Lévy measures and applications to stochastic optimization
      
This paper is concerned with the optimal control of jump-type stochastic differential equations associated with polar-decomposed Lévy measures with the feature of explicit construction on the jump term.
      
Most embryo sacs degenerated, and only about 4.5% of the ovules contained a normal embryo sac with an egg cell, two synergids, three antipodal, and a central cell containing two polar nuclei.
      
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1. All kinds of colonies of Volvox africanus were found in great abundance during the first two weeks of May, 1933, from a pond in Nanking.2. The smallest colony is much smaller than that recorded from Africa and the Philippine Islands.3. The somatic cells are not connected by protoplasmic filaments in adult colonies.4. Asexual colony usually contains from two to six daughters symmetrically arranged in pairs according to size on opposite sides of the polar axis.5. Sexual colonies of different kinds are...

1. All kinds of colonies of Volvox africanus were found in great abundance during the first two weeks of May, 1933, from a pond in Nanking.2. The smallest colony is much smaller than that recorded from Africa and the Philippine Islands.3. The somatic cells are not connected by protoplasmic filaments in adult colonies.4. Asexual colony usually contains from two to six daughters symmetrically arranged in pairs according to size on opposite sides of the polar axis.5. Sexual colonies of different kinds are developed from the asexual mother either singly or in combination with other kinds and asexual daughters.6. Parthenogonidia develope very early in young embryos long before the latter become matured and escaped from the mother colony. 7. During the early development of parthenogonidia, at least from first to fifth or sixth divisions, no growth of the whole embryo takes the place while the number of cells increases.8. Spermatogonia attain fully-grown size and begin to divide before the time of the birth of the colony.9. The development of spermatogonium consists of seven successive divisions in forming a bundle or platelet of one hundred and twenty eight spermatozoa or microgametes.10. The number of ovaries in a female colony varies from twelve to fourty six. Generally, the larger the colony, the more the ovaries developed.11. Risexual colonies contain only two or three spermatogonia in addition to fourteen to twenty seven ovaries.12. In general, specimens recorded in Nanking are identical to those from the tropical regions such as Africa and the Philippine Islands.

關於菲洲團走子之分佈,按記載所及。僅限於菲洲,菲列濱,南印度等熱带區域。今在南京發現,於地理分佈上實為一新記錄。此種團走子在羣體成熟之後,其體質细胞間,並無原生質線交相聯絡。無性羣體每含有二至六大小不同成對均置之無性幼羣體。幼羣體在脫離母體以前,往往含有第二代幼體。各種有性羣體,亦自無性母羣體中發達而成。雄性羣體,皆为橢圓形,而較其他羣體為小。雌性羣體中之卵或大配子约有十二至四十六。雙性羣體只含有二或三精原细胞,及十五至二十七卵或大配子。孤性生殖细胞在幼羣體内即發生。當最初五或六次分裂時,细胞雖增加,而幼胎並不長大。精原细胞经七次連續之均等分裂,而成一束一百二十八精子或小配子。

1. Each spieces of plant possesses a particular kind of pollen grain, therefore the morphological characters of pollen grains may be used for the identification of the botanical origin of certain crude drugs. 2. 46 kinds of Chinese drugs included in the Pen-tsao have been examined for their pollen grains. Full descriptions of the pollen grains found in these drugs are given together with an analytic key and 31 figures. 3. The pollen grain was first observed under microscope in dry form to see its side view,...

1. Each spieces of plant possesses a particular kind of pollen grain, therefore the morphological characters of pollen grains may be used for the identification of the botanical origin of certain crude drugs. 2. 46 kinds of Chinese drugs included in the Pen-tsao have been examined for their pollen grains. Full descriptions of the pollen grains found in these drugs are given together with an analytic key and 31 figures. 3. The pollen grain was first observed under microscope in dry form to see its side view, and then put into solution to absorb moisture and swell up to spherical form for the purpose of observing its polar view.

(1)每种植物的花粉,各有特殊的形状,因此花粉的形态特徵对於鉴定中药,尤其粉末生药的原植物有很大帮助。(2)本文叙述46种中药的花粉,除作形态的描述外,并编一分析检索表,另附三图版共31图。(3)本文所述花粉的形态,包括乾燥的侧面形,及吸湿膨胀後所现的极面形。本文曾由楼之岑教授提出宝贵意见,附图为刘安佑同志所绘特此致谢。

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions...

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions of the structure and development of five frequently observed rain-bearing systems i.e. cold front, blocking high and cold vortex, monsoon heat low, warm front and typhoon.The last part consists of discussions of some points of view in synoptic meteorology in China. It is stated that the monsoon precipitation is various in intensity and duration according the large-scale flow patterns. The difference of moisture content in the middle troposphere as a criterion for the identification of equatorial or tropical maritime air mass is proved to be missleading. It is shown that the upper air moist content is high only within the raining region near the polar or equatorial front. To the south of the equatorial front within the so-called equatorial air mass, the moist content in the middle troposphere is as low as within the tropical maritime air mass. It is the convergence and lifting of the tropical air mass which releases the convective instability and induces the surface moist air rising to the middle troposphere. The phenomenon of the forward-inclination of the so-called North-West Trough based on the time cross-section of wind is proved to be a mistake by combining two systems into one trough. The terminology of shear line, and the correct application of synoptic models in weather analysis and forecas-ting are also discussed.

本文是一年来从事夏季降水天气初步普查的简单报告。第一节首先指出所用分析方法与一般国内所通用者,稍有不同。高空等压面分析,取20米作为等高缐间隔,2℃作为等温缐间隔。代替40米及5℃的间隔,以适应夏半年较弱的温度场与气压形势场,在剖面分析中以等假相当位温缐代替位温缐,与等温缐配合以适应降水天气的凝结降水过程。 第二节讨论了五种夏半年基本降水天气系统,即冷锋、阻塞高压与冷涡、季风热低压、 暖锋及有风的结构,并简单地叙述了演变过程。 第三节对某些天气概念提供一些批判性的讨论。根据现已增加的观测材料,论证季风与梅雨是多样性的,决定于大规模的温度场与流场特性,以高空湿度大小区分赤道气团与热带海洋气团,证明是不适当的,因为中国赤道锋降水区域以南,即在所谓南南季风的赤道气团中,中层大气仍是干燥的。降水区域内,中层对流层的大量水份,是由于辐合或抬升的作用,使潜势的对流不稳定性成为现实的不稳定性,而由下层空气上升带上去的。文中还论证了所谓西北槽槽缐前倾是将两个系统混作—个系统的不正确桔果。最后还讨论了切交缐及一般模型在天气分析预报中的应用与限制。

 
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