极性

The film annealed in air is similar to silicon dioxide in structure. The appearance of polar bond Si-OH and the shrinkage of film cause the increase of dielectric constant.

大气条件下退火的薄膜样品以类SiO_2结构为主，强极性Si-OH键的生成和薄膜的剧烈收缩导致介电常数的上升。

The connection was tried in three different ways: Aldol reaction, coupling of sulfone and aldehyde, the Umpolung.

尝试三种不同的方法来进行两个片段的偶联。试验了Aldol反应，砜基与醛的偶联反应和极性反转的方法。

Allelism tests revealed that these phenotype-similar mutants could be divided into two complementary groups that were named ll1 and ll2 , respectively.

用图位克隆的方法，克隆了影响拟南芥叶极性发育的重要基因AS1，基因序列分析表明，AS1属于MYB基因家族，可能是一种转录调控因子。

To counter these problems, the Alternating Polarity and Alternating Voltage Methods

为了解决这个问题，采用变换极性和变换电压的方法实际上可以消除背景电流对样品的影响。

This section details how to make surface and volume resistivity measurements with these test fixtures, as well as the Alternating Polarity and Alternating Voltage techniques for measuring resistivity.

本节详细介绍如何使用这些测试夹具来进行表面电阻率和体电阻率的测量，以及测量电阻率时使用的变换极性和变换电压的技术。

The result shows that the activator which was made up of organic acid and organic amine complex satisfied the prospective demand.

结果表明：采用有机酸和有机胺复配制备的活性物质满足预期要求；复配溶剂满足沸点、黏度和极性基团三大原则；所制备的免清洗焊剂多项性能满足规范要求，达到了免清洗的要求，解决了助焊性与腐蚀性的矛盾；所制备的焊膏焊接性能良好，无腐蚀，固体残留量低，存储寿命较长。

Sol gel method ; capillary gas chromatographic column ; preparation ; free fatty acid ; amine ; polar compound

溶胶凝胶法；毛细管气相色谱柱；制备；游离脂肪酸；胺；极性化合物

We investigated alcohol, acid, amine, ester and several kinds of normal metal clusters by using the HF-LCAO-MO method for the lubricate mechanism of different polarity bases, through the frontier orbital energy levels and its composition.

用HF-LCAO-MO方法计算醇、酸、胺、酯4类油性剂和常见金属的原子簇模型，从前线轨道能级、分子轨道组成等方面研究了不同极性基团的润滑机理。

The strata in this section cover three lithostratigraphic units, seven conodont zones, five ammonoid zones and three bivalve zones. Two normal and two reversed magnetic polarity zones as well as the cyclic sequences corresponding to the Milankovitch climate periods driven by the Earth's orbit are well recognized in the lower part of the section.

该剖面包括3个岩石地层单元、7个牙形石带、5个菊石带、3个双壳类带；在剖面下段地层中识别出2个正向磁性带和2个反向磁极性带；与地球轨道天文周期相对应的Milankovitch气候沉积旋回也可以明确地辨认；碳氧同位素δ13C演变呈现两次大的旋回。

The fact that increasing solvent polarity increases the reaction rate supports to the conclusion that the ammonolysis of α-CDA with trimethylamine follows SN2 mechanism.

增加溶剂极性对α-CDA的三甲胺氨解反应有利，表明反应具有SN2反应的特征。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。