查询词典 polarity

Fibroblast growth factor from the extraembryonic endoderm (hypoblast, a cell layer unique to amniotes) directs the expression of Wnt planar-cell-polarity pathway components to the intercalation domain.

尤其是，这项工作显示了一个原肠胚形成之前的早期插入事件，它可能是回答关于羊膜动物原始条纹是怎样从远古胚孔演化而来这样一个经典问题的关键。

This ultimately caused the red race to fall into the dance of polarity of extremes or "fall from grace".

这最终导致了红族跌到极端的极性，或"从优雅中堕落"。

Seventh: The sol-gel method developed here for the synthesis of nanocrystalline film gate are compatible with conventional silicon planar technology, and there is no any limitation to the polarity of the film type n or p for making different kinds of nanocrystalline-film-gate-OSFET sensor. This is a very important basic work for the extending, improving and integrating of the similar devices.

七、研究开发的制备氧化物及复合氧化物纳米晶薄膜的溶胶—凝胶工艺可以实现与硅平面工艺兼容，采用该工艺可以制作不同纳米薄膜栅的OSFET新型气敏元件，薄膜的导电类型不受限制，可以是N型的，也可以是P型半导体，为该种类器件的推广和改进以及进一步的集成化创造了基础。

Experimental results shows that the polarity of surface charges has a great influence on impulse flashover voltages.

实验结果表明，绝缘子表面电荷极性对冲击电压下的闪络电压有极大的影响。

The tuned Brunhes/Matuyama paleomagnetic polarity reversal agrees well with an age of 0.78 Ma dated previously. The tuned ages for several planktonic foraminifer Mo-events also agree well with published dates, and new ages for some other bin events in the South China Sea are also estimated.

调谐结果显示，1143站190.77m、191个冰期、间冰期的深海沉积记录了5.02Ma的南海古海洋学历史；1143站布容／松山磁性反转事件的年龄为0.78Ma，与前人研究结果一致；15个识别出的浮游有孔虫生物事件年龄部分与已经发表过的年龄相吻合，部分为该生物事件在南沙海区的新年龄。

Background Cell polarity is a fundamental feature of diverse cell type, it is essential for thefunction of many cells.

研究背景细胞极性是多种不同类型细胞的基本特征，对多数细胞的功能发挥是必需的。

The gallotannins of Galla chinensis were extracted consecutively by five solvents of different polarity, and the antioxidant and antimicrobial activities of the extracts were evaluated.

对五倍子中提取单宁连续5个不同极性溶剂，和抗氧化剂和提取物抗菌活性进行了评价。

Polarity,or action and reaction,we meet in every parto nature;in darkness and light;in heat and cold;in the ebband low o waters;in male and emale;in the inspirationand expkation o plants and animals;in the equation oquantity and quality in the luids o the anima1body;in thesystole and diastole20 the heart;in the undulations o luids-arjld--o sound:in the centriuga1and centripeta1gravity3;inelectricity,galvanism,and chemica1ainity.

两极性或作用与反作用在自然界中随处可见：黑暗与光明、炎热与寒冷、潮落与潮涨、雄性与性、动植物的吸气与呼气、动物体内的体液数量与质量的均衡、心脏的收缩与舒张、液体的波动和声音的起伏、离心力与向心力；此外在电荷、电流和化学的亲和性上也不难发现这点。

The influence of different polarity solvents on the antimicrobial effect of Yucca gloriosa L.extraction was studied,and the optimum extraction conditions were confirmed with L_9(3~4) orthogonal experiment.

以不同极性的提取溶剂制备凤尾兰提取液，研究提取液对几种果蔬病原菌的抑制效果，通过单因素试验和L9(34)正交试验，确定抑菌成分的较佳提取条件。

A device and method for preparing compound nano fiber endless tow, which contains feeding material liquid to pair of electric spinning nozzle on frame, each nozzle respectively applied with high dc voltage with opposite polarity, each pair of nozzle jetting out nano fiber with opposite electric charge, said nano fiber attracting and colliding each other to form compound nano fiber, then forming nano fiber endless tow after drawing and stretching, the first opposite set pair of electric spinning nozzle jetted compound nano fiber endless tow is stretched down and used as acceptor which covered by the nano fiber jetted by second pair of nozzle an d forming two layers of compound nano fiber endless tow after drawing and stretching, in turn to get multilayer compound nano fiber endless tow after drawing and stretching by godet roller.

复合纳米纤维长丝束制备装置及其制备方法是一种简单、高效电纺制备纳米纤维长丝束的方法，其步骤为将料液输送给支架(3)上的电纺喷头对(1)；喷口相向的电纺喷头对(1)的每个喷头分别施加相反极性的直流高电压；每对相向喷口喷出分别带相反电荷的纳米纤维，并在空中相互吸引、碰撞形成复合纳米纤维，经牵引、拉伸后形成复合纳米纤维长丝束；第一对相向放置的电纺喷头纺丝形成的复合纳米纤维长丝束向下拉伸，并作为接受体与第二对电纺喷头喷出的分别带相反电荷并相互吸引的纳米纤维在空中相遇，被第二对电纺喷头喷出的纳米纤维包裹，经牵引、拉伸后形成两层复合纳米纤维长丝束；依次类推，最后经导丝辊对(2)牵引、拉伸后得到多层复合纳米纤维长丝束。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。