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METHODS: A series of N-octyl-N'-succinyl chitosan labeled with fluorescein, were incubated with HepG2 liver cancer cells, K562 leukemia cells, A549 human lung cancer cells, and BGC cancer cells respectively and followed by using flow cytometry and enzyme-linked immunosorbent assay to assess the affinity and inhibition of N-octyl-N'-succinyl chitosan for the four kinds of tumor cells already mentioned.

用异硫氰酸荧光素对N-正辛基－N'-琥珀酰基壳聚糖进行标记，再分别与人肝癌细胞(HepG2)、人白血病细胞(K562)、人非小细胞肺癌细胞(A549)及人胃癌细胞共培养，通过流式细胞仪及酶联免疫检测仪测定N-正辛基－N'-琥珀酰基壳聚糖对肿瘤细胞的亲和性及抑制力。

In addition, the preparation conditions of butylbiguanide sulphate were studied by orthogonal test.

此外，用正交设计对正丁基双胍硫酸盐的合成反应条件进行了研究。

It indicates that when the pseudoleucite syenite was sintered at 760-880 ℃ for 1.0-1.5 h,with the sodium carbonate as the additive,the decomposition rate of minerals in the pseudoleucite syenite could reach 97.1%.

在综合分析假白榴正长岩物相组成的基础上，以碳酸钠为助剂，分解假白榴正长岩中主要矿物相，对其进行热力学分析，并与石灰石烧结法进行比较。

He was by a river in East Africa, facing the camera and up close to it, squatting down, getting ready to take a photograph of something.

他在东非的一条河边正对摄像机，而且是近镜头，蹲在那里好像正准备拍摄什么。

Particle system and Opengl mapping technology, according to the nature of being tetrahedron, a tetrahedral formation!

利用粒子系统和Opengl贴图技术，根据正四面体的性质，生成一个正四面体！

In chapter 4, we studythe cyclic edge connectedness of regular half vertex transitive graphs, we showthat a connected k(≥4)-regular half vertex transitive graph X with girthg≥6 isλ_c-optimal, and we also obtain a su?cient and necessary conditionfor a connected k(≥4)-regular half vertex transitive graph X with girth 4 tobeλ_c-optimal.

第四章，我们研究了正则半点传递图的圈边连通性问题，主要结果是证明了一个围长为g≥6的k(≥4)-正则连通半点传递图X是λ_c-最优的，并且得到了一个围长为g = 4的k(≥4)-正则连通半点传递图X是λ_c-最优的充分必要条件。

Here a simple technique for parametrization construction of 17/11 biorthogonal wavelet family is presented: first, the associated synthesis filter is formulated as one trigonometric polynomial represented by two free parameters; then the perfect reconstruction condition of the filter bank is reduced to one system of linear equations; finally the analysis filter is obtained by solving this system of linear equations. Thus, the exact free parameter expressions for the 17/11 biorthogonal wavelet filter banks are derived.

该文给出了一种参数化构造17/11双正交小波组的简便方法：首先把小波合成滤波器表示为用两个自由参数表达的三角多项式，然后把双正交小波的精确重构条件归结为一个线性方程组，最后求解此方程组得到对应的小波分解滤波器，从而得到了17/11双正交小波滤波器的参数表达式。

Suppose you're the driver of a trolley car.Your trolley car is hurlting down the track at 6Mph.

设想你是一位电车司机，你的电车正正以每小时6英里行驶

The third vertical folding can be operated for positive folding or negative folding as required by adjusting sheet turning device. The functions of 32mo two-up positive folding or negative folding are provided as customed.

本机第四次垂直折页方向可通过转向装置方便的调整对产品按要求进行正折或反折，同时本机还可以根据客户需要配置32开双联正折或反折功能。

The paper does experiment on the image restoration by using the regularized method with a variance uniformization constraint, and the results show that this method outgoes the Tikhonov regularized method.

本文利用带一致方差约束的正则化方法进行了图像恢复试验，试验结果表明该方法优于Tikhonov正则化方法。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！