结构单元

The paper also studies on function of acrylonitrile unit incorporated into the polyacrylate sizes.

本文还对聚丙烯酸酯浆料中的丙烯腈结构单元作了研究。

It is found that there are good relationships between the fundamental frequencies and the structural properties of straight-chain alkanes, and between the sum-frequencies and the additivity properties of straight-chain alkanes as well.

将直链烷烃分子看成是一个多自由度振动系统，用机械振动理论中的传递矩阵法计算了 C2~C32直链烷烃的固有频率，分析了固有频率随化合物结构单元的变化规律。

The study of crystal structure indicates that the complexes belongs to tetragonal,14(1)/a, a=b=27.047(5) A, c=14.103(3) A, a=b=y =90,V=10317(4)A3, Z=16, Dc=1.071g/cm3, F(000)=3408, R,=0.1395, R2=0.1766 and every unit of the tetranuclear complexes is four-coordinated to tridentate ligand and nitrogen atom in pyrazolone from other ligand. The complexes is slightly deformed square-planar geometry.

晶体结构研究表明，该配合物为四方晶系，空间群I4(1)/a，a=b=27.047(5)，c=14.103(3)，α=β=γ=90°，V=10317(4)，Z=16，Dc=1.071g/cm~3，F(000)=3408，R_1=0.1395，ωR_2=0.1766，其结构单元是由一个三齿配体中的ONO和另一个配体吡唑啉酮环二位上的N配位后形成略微畸变的平面四边形构型，其中Cu的配位数为4。

The results show that molecules of PEO〓 have priority to locate at the interface of PVF〓/PVC to reforce their interaction when content of PEOx was less than saturated concentration in the interface , and PEOx joined into the PVF〓 phase and /or the PVC phase; the particles size of dispersed phase, PVC, became larger when C was more than Cs; the blend became miscible when C was much more than Cs.

结果表明，aPS与sPS的非晶区相容，共混物中不存在aPS的独立相区；共混物的熔点及长周期不随共混物aPS含量的变化而有所改变；sPS的纤晶结构单元没有变化，共混物结晶度下降，aPS处于sPS的纤晶之间；sPS为α-晶型，其晶胞结构参数在共混前后不变，aPS没有进入到sPS的晶胞中。

In contrast to ordinary liquid and amorphous alloys, the number of 1551 bonds related to the icosahedral structure becomes very smaller with the decrease of temperature,but the numbers of 1311,1301,1201 bonds related to the rhombohedral structure are increased remarkably.

结果表明，与通常液态及非晶态金属相反，随着温度降低，与二十面体相关的1551键型数越来越少，而与菱面体相关的1311，1301和1201键型数目显著增加，最后形成以菱面体结构单元为主的非晶态结构。

X-ray single crystal diffraction study reveals that the Zn atom is five-coordinated, Furthermore, a 2D superamolecular network is constructed via the tetracarboxylate bridged binuclear of Zinc SBU ,and the amino substituent results in the formation of hydrophilic 2D structure of the title complex.

该配合物中，锌离子为5配位，2个Zn原子和4个羧基形成的双核锌结构单元，进而形成二维方格式平面结构，氨基取代基导致配合物具有亲水性。

The ligand of HL3 differs from HL1 and HL2 in having an ethyl group not methyl group on the triazole ring and having a thienyl group on the substituted amino group, meanwhile there are two kinds of 3 molecules in the crystal structure.

在化合物3中配体与化合物1和化合物2的不同，同时其一个结构单元中还存在两个结构几乎相同的分子，这两个分子只在键长、键角上有轻微差别。

The DNG structure unit is composed of square split ring resonator and strip wire. The modified NRW method is used to extract the equivalent permittivity, permeability, and refractive index from the scattering parameters of the two-port waveguide with DNG structure. At the designed operating frequency, the refractive index approximates zero, which makes the nondirective electromagnetic wave tend to approximate plane wave along the normal direction of the superstrate and congregate the radiation energy.

以方形的SRR环和金属条带构成双负媒质结构单元，使用修正的NRW方法，通过放置双负媒质结构的二端口波导的散射参数，提取了等效的介电常数、磁导率和折射率，在所设计的工作频率，折射率接近于0，可以将原本发散的电磁波整理成趋近于覆层面法线方向的近似平面波，起到能量汇聚的功能。

The DNG structure unit is composed of square split ring resonator and strip wire. The modified NRW method is used to extract the equivalent permittivity, permeability, and refractive index from the scattering parameters of the two-port waveguide with DNG structure. At the designed operating frequency, the refractive index approximates zero, which makes the nondirective electromagnetic wave tend to approximate plane wave along the normal direction of the superstrate and congregate the radiation energy.

以方形的SRR环和金属条带构成双负媒质结构单元，使用修正的NRW方法，通过放置双负媒质结构的二端口波导的散射参数，提取了等效的介电常数、磁导率和折射率，在所设计的工作加热板频率，折射率接近于0，可以将原本发散的电磁波整理成趋近于覆层面法线方向的近似平面波，起到能量汇聚的功能。

They encompass the following broad bands of biological roles:(1) basic structural units of cellular membranes and cytologically distinct subcellular bodies such as chloroplasts and mitochondria;(2) compartmentalizing units for metabolically active proteins localized in membranes;(3) a store of chemical energy and carbon skeletons; and (4) primary transport systems of nonpolar material through biological fluids.

这类物质无论在功能上还是结构上都有明显不同，它们具有以下广泛的生物学作用。1。细胞膜和细胞中亚细胞器，如叶绿体和线粒体的基本结构单元。2。定位于细胞膜上具有代谢活性蛋白质的划分单位。3。化学能和碳骨架的储藏物质。4。以生物流的形式使细胞内非极性物质得以运输。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失