四面体的

The triangle and tetrahedron optimization methods were developed for the selection of back-ground electrolyte in capillary zone electrophoresis.

建立了两种高效、快速的毛细管区带电泳背景电解质的优化方法三角形优化法和四面体优化法。

But it is not an easy task to directly extend the linear triangle geometric inequality to the n-simplex, thus there are many geometric inequalities worthing exploring and researching when we extend the linear geometric inequality to the tetrahedron and the n-simplex.

而三角形中的某些线性几何不等式直接推广到维单形并不是一件容易的事，因而在推广到四面体中乃至维单形时还有许多几何不等式值得探讨和研究。

An easy task to directly extend the linear triangle geometric inequality to the n-simplex, thus there are many geometric inequalities worthing exploring and researching when we extend the linear geometric inequality to the tetrahedron and the n-simplex.

而三角形中的某些线性几何不等式直接推广到维单形并不是一件容易的事，因而在推广到四面体中乃至维单形时还有许多几何不等式值得探讨和研究。

One of the major problems,however,remains the poor solubility and membrane permeation of pepstatin, as well as its lack of selectivity among aspartyl proteases.The amino acid statine can mimic the tetrahedral transition-state of amide bond hydrolysis but cannot itself be hydrolyzed by the enzyme.

分子中含有两个非天然氨基酸statine能模拟天冬氨酸蛋白酶底物活性部位的四面体水解过渡态，且本身不易被切割，通过氢键和酶的天冬氨酸残基结合。

Linked quadrilateral pyramid and hexangular pyramid as a precursor nucleus,two new microcrystals of silver bromoiodide were prepared.

本文研究了用连体四角锥碘化银为晶核制备类似于四面体碘溴化银微晶和用六方角锥碘化银为晶核制备片状碘溴化银微晶的方法，并对两种不同微晶的结构，形态和性能进行了比较和分

The morphology of calcium carbonate scale withthe presence of the PAA is not in order any more, but can be still observed the shapeof cubic structure. The crystal morphology of calcium carbonate scale with addingP is completely destroyed, and XRD spectrums show the quantity ofcalcite reduces, so the scales become loose, spongy, floccular and amorphous.

添加PAA后尽管表面不再平整但仍能观察到比较规整的四面体晶体结构；而添加P后晶体形状被彻底破坏，垢样成为疏松、多孔、絮状的无定形聚集体。X衍射谱图也表明，添加P后垢样中方解石含量减少甚多，垢样变得疏松。

If we used potentiostatic electrosynthesis method, a kind of black polymer film was found on cathodic surface when 〓 was more negative than-1. 40V . XPS analysis demonstrated that the film formed from excited pyruvic acid, tetrahedral intermediate and imino acid.

时，电极表面上吸附的丙酮酸，四面体中间体和亚胺酸受激而生成黑色的聚合膜，通过XPS技术对聚合物进行了定性、定量和结构分析。

The rest positions of 〓 unit are occupied by water and an oxygen atom of carboxylates from another type of ligand. With two carboxylates of this type of ligand, two ladderlike long chains are connected to form one-dimensional ladderlike chain structure.

第二类配体中每个羧酸根的一个氧原子与水分子饱和四面体结构单元余下的位置，并连接两个梯形长链形成一维梯形链状聚合物。

The total energies,ionization potentials and electron affinities of two geometric structures of O_4 are given.Compared with the calculated results of oxy...

与氧原子、普通氧分子O2和臭氧分子O3的计算结果比较，显示O4分子可以以正方形结构或正四面体结构形式存在，其中正方形结构更有可能是O4分子的真实空间结构。

It was found that the stability of the nickelchelates is in accord with the base strength of the amino acids,and these chelates shou...

实验结果表明镍的络合物具四面体结构，N-萘氨基乙酸镍的顺磁性亦证明此点。

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。