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He number of TCR V(Vα equal s to 100 and Bβ equals to 30 ) is less than the one of lg Vh (Vh equals to 300),for TCR V is subject to negative selection of major histocompatibility complex according to the neutral theory We discussed that is somatic mutation or DNA rea rrangement the main force in producing antibody diversity and are there pseudoge nes in TCR V or not.

CR V的数目(V α为100，Vβ为30)远少于Ig VH(数目为300)，原因是前者受到主要组织相容性复合体的制约，即受到负选择，这与中性学说观点相一致。文章还讨论了体细胞突变和DNA重排对两类抗体多样性产生上的作用，并探讨了Ig VH和TCR V的假基因问题。关键词分子进化，协同进化，免疫球蛋白，T细胞受体，中性学说

Oligoclonal expansion T cells could be detected and Vβ21 oligoclonal T cells were identified in all 3 cases.Conclusions The skew distribution and clonal expansion of TCR Vβ subfamily T cells could be found on the patients with CML.

结果 3例病人仅存在3～9个TCR Vβ亚家族T细胞，部分Vβ亚家族T细胞呈寡克隆性增殖，Vβ21的寡克隆T细胞见于全部的3例病人中。

The optimal processing conditions are as follows: roasting temperature at 1 000℃, roasting time for 40 min, the ratio of NbH dosage to theoretic dosage at 1.1. The specific capacity of niobium suboxide of preparation by agate grind procedure is 69.50 mF·V·g-1, the loss is 11.25%, the leakage current is 1.8×10-4A·F-1·V-1, and the electrical properties are better than that of the national standard (GB/T 3136-1995) of FTa16-300 tantalum powder for capacitor.

用正交试验法及方差分析对玛瑙研磨工艺进行优化，得到制备低价铌氧化物最佳条件是：焙烧温度为1 000℃，焙烧时间为40 min， NbH用量与理论量之比为1.1，所制得的产物杂质含量低，比容为69.50mF·V·g-1，损耗为11.25%，漏电流为1.8×10-4A·F-1·V-1，其电性能指标高于FTa16—300电容器钽粉国家标准(GB/T 3136—1995)所规定的值。

Let G= be a graph with vertex set V and edge set E and let T be a subset of V.

令G=是一个顶点集合V和边集合E的图形，且令T是V的子集合。

The idiotype TCR Vα1-pIRES-TCR Vβ8 eukaryotic vectors were developed successfully, it would be provided the basic data for the study on specific TCR gene modified T cells.

成功构建了独特型TCR Vα1-pIRES-TCR Vβ8双基因表达载体，为利用特异性TCR基因修饰T细胞的研究提供了基础资料。

The stoichiometrical preferred-orientation AlN (100) polycrystalline films were deposited on Si (100) wafers with DE=1.0 J*cm-2, PN2=13.333 kPa, Tsub=200℃, V=650 V, f=5 Hz, and dS-T=4 cm.

实验结果表明，当DE=1.0 J*cm-2，PN2=13.333 kPa，Tsub=200℃，V=650 V，f=5 Hz，dS-T=4 cm时，高质量的AlN薄膜被成功地沉积于Si(100)基片上。

Results: 5~12 Vβ subfamilies were identified in 6 T-ALL cases and 2~18 Vβ subfamilies were identified in 13 B-ALL cases, respectively.

结果：6例T-ALL病人分别表达5～12个Vβ亚家族，13例B-ALL病人分别表达2～18个Vβ亚家族。

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An untyped constant v is assignment compatible with type T if v can be represented accurately as a value of type T.

一个无类型的常量v是与类型T兼容，只要v可以被准确的作为一个T类型的值代替。

An untyped constant v is assignment compatible with type T if v can be represented accurately as a value of type T.

如果v是T类型，那么一个未命名的静态常量v才能与T类型赋值相容。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。