两极性

The amphiphiles, 4-8, can not form reverse bilayers in organic solvent, which result in that the molecular interactions unable to meet the need for hydrophile-lypophile balance, so that they crystallize and exhibit no gelling abilities. The mono-chained L-alanine derivatives, 1-3, can self-assemble into bilayer aggregates, through intermolecular hydrogen bonding and homochiral effect in a number of organic liquids, which are juxtaposed and interlocked by van der Waals interaction, and finally gelate the organic liquids.

单链酰基化L-丙胺酸两亲物1-3在一些低极性的有机溶剂可以通过分子间氢键相互作用及同手性聚集作用形成有序的反双分子膜结构，这些有序反双分子膜结构单元依靠vander Waals力相互作用可以平行排列且相互之间进行连结形成长纤维状的聚集体，纤维状聚集体在有机介质中可以进一步相互连结形成三维网状结构，进而胶凝有机溶剂。

The results of DPBMN in n-hexane solution show that there are two non-radiative processes occurring in the local excited state. The decay time constants of ~4 ps and ~ 220 ps are due to vibration relaxation and intersystem crossing processes respectively.

实验结果显示DPBMN分子在非极性溶剂中的区域性激发态(local excited state，LE state)有两个非辐射缓解的过程发生，首先为发生在LE能阶的振动缓解(~ 4 ps)，之后为系统内转换的过程(~ 220 ps)。

The monodic regression equation of BCF and t_R and the binary regression equation T...

统计检验表明，两类估算方程在不同固定相上的平均相关系数分别为0·952和0·965，均呈极显著相关(P·01)，可用于估算取代苯类化合物在草鱼体内的BCF，估算结果不受固定相极性的影响。

The two-dimensional structural units (such as silicon-oxygen tetrahedral sheet, octahedral sheet), interlayer space are assembled according to the sphere close packing manner, and the close packing layers parallel to {0001}. There are several mechanisms to release the difference in size while the silicon-oxygen tetrahedral sheet and octahedral sheet assemble the TO and TOT-type structural layers. The two types of structural layers with different interlayer space fitted together in six kinds of assembling modes and formed six kinds of crystal layers. The combinatorics analysis of the two-dimensional structural units revealed that there may be 28 kinds of TOT type interstradified minerals in six kinds of polysomatic assembling modes of interatradified structure. The structural layer is symmetrical for octahedron sheet in the structure of interstratified minerals and shows polarity characteristics.

结果表明，不同二维结构单元体（包括硅氧四面体片、八面体片、层间域的构筑基本符合球体紧密堆积原理，紧密堆积层平行{0001}；四面体片与八面体片构筑TO和TOT结构层时采取多种机制消除二者在二维尺寸上的差异；两种模式的结构层与不同类型的层间物组装形成六种组装模式的晶层；并通过二维结构单元体的组合规律的分析，计算出可能存在的28种TOT型间层结构，它们分属于6种间层结构多体性组装模式；间层结构中，结构层对于八面体片是不对称的，并在属性上表现出极性特征；间层矿物的晶层类型可用6种多体性组装模式加以表达。

The filter capacitor paralleled solar~array has been calculated in the single~phase full~bridge undispatchable photovoltaic grid~connected system.

本文分析了全桥式不可调度式单相光伏并网装置的主功率器件的单极性切换模式中的电流及能量流向规律，并据此提出了太阳电池两端平波电容的容量选择原则。

Internal and external warfare are simply opposing polarities of the same thought-form of destruction.

内在和外在战争只是同一破坏性思想形态的两种相对极性。

The number of restrikes can be decreased significantly by using a bipolar load current arc conditioning.

只有通过两个极性负载电流的电弧老炼才能有效地减少真空开关的弧后延时重击穿现象。

The UV-visible spectra of oxidized and reduced F28Y and F106Y were in agreement with the wild NGB, but the oxidized F28Y＇s Sorer band had a 2 nm blue shift, which suggested that the two mutants still remain hexa-coordinated form.

氧化型和还原型F28Y及F106Y的紫外-可见吸收光谱与野生型相似，仅氧化型F28Y的Soret带有2nm的蓝移，说明这两种突变体蛋白仍保持六配位形式。F28Y的荧光最大发射峰明显红移（340nm→347nm），表明其荧光基团更加暴露于极性环境中。

Disassemble the lead wire from generator "+" binding post if the marks of "+" and "-" polarities is dimness during battery replacement, and serial connects one lamp between the lead wire and "+" binding post, and then connects with two pieces of power supply wire of the battery; it indicates the connection is correct if the lamp is lit, otherwise it indicates the connection of battery polarities is wrong.

在更换蓄电池时，若其&+&、&-&极性标记不清楚，可拆下发电机&+&接柱上的引线，在其引线与&+&接柱之间串联一试灯，然后再接上蓄电池两根电源线，若该试灯不亮，表明接线正确，否则说明蓄电池&+&、&-&极接错。

The regression equations could be used to estimate the BCF of the benzene derivatives in grass crap , and the results were not affected by the polarity of stationary phases.

统计检验表明，两类估算方程在不同固定相上的平均相关系数分别为0·952和0·965，均呈极显著相关(P·01)，可用于估算取代苯类化合物在草鱼体内的BCF，估算结果不受固定相极性的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。