基面

Complicated system ; space metric tensor ; natural base ; physical base ; non-Cartesian tensor ; Cartesian tensor ; helical-Cartesian coordinate system ; parabolic cylindrical coordinate system

复杂系统；空间度量张量；自然基物理基；笛卡儿张量；非笛卡儿；张量；螺旋线——笛卡儿坐标系；抛物柱面坐标系

Similarly, we have investigated the stable structure of Ge20 and found that its ground state structure is different from that of Si20. But the most stable structure is also a stacked structure from the ground state structure of Ge10 (tetracapped octahedron with Td symmetry), which is in agreement with the fragment experiment.

类似地，我们首次对Ge20团簇的稳定结构进行了同样的研究，发现它的基态结构与Si20团簇的不同，但它同样以Ge10团簇的基态结构（四帽八面体，Td对称性）为单元的一个堆积结构，这与碎片实验结果吻合。

By analyzing the problem of hydrological 3D spatial dispersion in 3D finite differential numeric simulation of porous groundwater flow, as well as discontinuous spatial distribution and asymmetric thickness of porous aquiferous strata and partitive groundwater stratum, the paper presents the GIS-based technique of 3D spatial dispersion of porous aquiferous stratum system. Besides, the paper puts forward the 3D spatial dispersion method of irregular hexahedral unit based on GIS to guarantee to the greatest degree the uniqueness of the stratum types among the dispersed units and improve the precision of 3D spatial dispersion.

分析了目前孔隙地下水流三维有限差分数值模拟中对含水层系统三维空间离散存在的问题，针对自然界孔隙含水层与隔水层空间分布的不连续性与厚度的不均匀性，研究了基於GIS的孔隙含水层系统三维空间离散实现的技术路线，提出了基於GIS与不规则六面体元的孔隙含水层系统的三维空间离散方法，最大限度地保证了离散体元中含水层类型的单一性，提高了孔隙地下水流模拟模型三维空间离散的精度。

Hebei Shuanglong Silver lacquer paint factory price is lower than the other plant 1 / 2, to call upon the lowest price; thousands of color paint, alkyd paints, Nitro-paints, silicone paints, quick drying paint , acrylic paint, whiteá, lead oil, blending paint, alkyd enamel, silver paint, Antirust Paint, all kinds of primer, topcoat, works with paint, steel with paint, nitro Enamel, heat resistant high temperature paint, crossed the road paint, epoxy coal Lek varnish, lacquer chimney, perchlorethylene paint, hundreds of industrial, civilian paint factory price is lower than the other 1 / 2; bucket can also be the lowest shipping barrel also can be customized!

，河北双龙银粉漆厂油漆价格低于其它厂1/2 ，来电话即告之最低价格；★数千种色油漆，醇酸油漆，硝基油漆，有机硅漆，快干油漆，丙烯酸漆，白厚漆，铅油，调合漆，醇酸磁漆，银粉漆，防锈漆，各种底漆，面漆，工程用漆，钢铁用漆，硝基磁漆，耐热耐高温漆，马路划线漆，环氧煤沥清漆，烟囱漆，过氯乙烯漆，数百种工业、民用油漆价格低于其它厂1/2 ；一桶也可以最低价发货，一桶也可订做！

Positive staining of Stro-1 was found in 7.6% of SCAP. Morphologically, PDLSCs were fusiform-shaped, with many short and long ramifications under a scanning electron microscope, and the secreted extracellular matrix were around them.

透射电镜下可见，第1～3代牙周膜干细胞及根尖牙乳头干细胞生长良好，胞浆内线粒体，高尔基体和粗面内质网丰富，随着培养时间的延长，分泌的细胞外基质增多。

As two men, measuring-rods in hand, quarrel about their boundaries in a field that they own in common, and stickle for their rights though they be but in a mere strip, even so did the battlements now serve as a bone of contention, and they beat one another's round shields for their possession.

壮实的鲁基亚人不能捅开达奈人的护墙，打出一条直抵海船的通道，而达奈枪手也无力挡开已经逼至墙根的鲁基亚兵汉，像两个手持量杆的农人，站在公地上，大吵大闹，为决定界石的位置，在一条狭窄的田域，为争得一块等量的份地翻脸，其时，雉培隔开两军，而横越墙头，双方互相杀砍，击打着溜圆的、摭护前胸的牛皮盾面，击打着稳条飘舞的护身的皮张。

Methods: Response surface methodology was applied to study effects of extraction temperature, ethanol concentration, extraction time and solid to liquid ratio on extraction yield of anthraquinone and stilbene glycoside as well as clearance rate of the extracts to DPPH radical.

通过单因素和中心组合试验，对影响何首乌中二苯乙烯苷、蒽醌类化合物含量的提取因素（温度、酒精浓度、时间、料液比）进行了研究，同时将提取物清除DPPH自由基的能力作为考察指标，运用响应面分析法确定清除自由基组分提取的最优化工艺条件。

Through analyzing the cutting theory for the teeth of Archimedes worm and worm wheel ,this paper studies the method of modeling the worm transmission based on SolidWorks software and establishes the corresponding mathematics model.

通过对阿基米德蜗杆蜗轮齿面切削原理的分析，探讨了在Solid Works软件中阿基米德蜗杆传动的建模方法，并建立了相应的数学模型。

The copper atom is in a planar coordination site of [N_2O_2] and it devites from the mean plane by only 0.80 pm. Byπ-πstacking interactions, a alabastrine structure was obtained.(2)Schiff-base complex [Cu(H_2O)]·H_2O, where H3GS is the 3-carboxyl -salicylidene glycine, was synthesized and characterized by elemental analysis, IR spectra and single-crystal analysis. The crystal belongs to monoclinic system, space group P2(1)/c, a=848.46(3)pm, b=681.54(3)pm, c=1967.16(8)pm,β=95.8210(10)°, Z=4, R_1=0.0279, wR_2=0.0724. The copper atom is in a square-pyramidal field with the base

结果表明该晶系属单斜晶系，空间群P2(1)/c，晶胞参数：a=848.46(3)pm，b=681.54(3)pm，c=1967.16(8)pm，α=90°，β=95.8210(10)°，γ=90°，Z=4，R_1=0.0279，wR_2=0.0724，Cu原子位于轻微变形的四方锥场底心，底面被氮原子、酚氧原子、甘氨酸羧基的一个氧原子和一个水分子氧原子占据，而甘氨酸羧基的另一个氧原子占据相邻分子的锥顶，因而形成一维链状结构；合成了单核双聚配合物Na_2[Cu_2_2]·2H_2O ，铜三核配合物Cu_3_2·5H_2O和铜锌异三核配合物ZnCu_2_2·5H_2O，并用元素分析，IR光谱，电子光谱和磁化率测定对配合物的组

The marine carbonate near the unconformity was mainly reconstructed by strong atmogenic freshwater during the Indo-China and Yanshan Movement, being better reservoir. The reconstructed records behave as following: the ratio for 87Sr/86Sr in the different carbonate minerals or structural components is higher than carbonate matrix, while the δ13C and δ18O value in mass of samples in the different carbonate minerals or structural components are lower than carbonate matrix.

在不整合面附近的海相碳酸盐岩主要受到印支、燕山再曝露期古喀斯特作用强烈的大气淡水的改造而形成良好的岩溶储层，这种改造作用的记录表现在各种洞或脉中的碳酸盐矿物的87Sr/86Sr比值显著高于基质碳酸盐，而大多数样品的δ13C和δ18O值则显著低于基质。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新