二聚性

A highly effective and efficient phosphorus-free, nitrogen-free and biodegradable sequestering agents and detergency builders Polyepoxysuccinic acid was synthesized through negative ion synthesis.

以顺丁烯二酸酐为原料，通过环氧化反应和阴离子聚合的方法，合成了一种无磷、非氮、生物降解性好的环保型阻垢剂聚环氧琥珀酸。

The hierarchical clustering method is applied to deal with the problem that the solution of MLS-SVM is lack of sparseness.

运用谱系聚类方法解决多核最小二乘支持向量机的解缺乏稀疏性的问题。

The main purpose of this paper is to propose a unsupervised clustering-based method to pre-extract the support vector for training the SVM in light of the theory that the classification facet of SVM is determined by support vector only. By analyzing the limitation existed in current multi-class classification methods, and taking into account comprehensively the separability of the class set of nodes, a hierarchical classification method of SVM binary tree based on tree classifier with optimized overall performance is designed.

针对SVM的分类面仅由支持向量决定的理论，提出一种基于无监督聚类方法来预抽取支持向量，训练向量机；并分析现有多类分类方法所存在的弊端，基于综合考虑节点的类集合可分性，设计一种基于树分类器整体性能最优的SVM二叉树层次分类方法。

Objective: To investigate the change of PARP positive cells in hippocampus at different time after traumatic brain injury.

目的：观察大鼠创伤性脑损伤后海马部位不同时相聚二磷酸腺苷核糖多聚酶阳性细胞的表达变化。

We reported the effect of several kinds of surfactants on the fluorescent properties of a new watersoluble fluorescent polymer (PPESO3) synthesized in this paper.

研究几种不同类型的表面活性剂对所合成的新型水溶性荧光聚合物PPESO3聚[5，3-二(3-磺酰化丙氧基-1，4-苯撑乙烯]的作用。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。