查询词典 bases

Methylation is a natural process that mainly occurs on cytosine, one of the four "letters" or bases that make up DNA.

甲基化是主要发生在在胞嘧啶(组成DNA的四个基或字母之ㄧ)的一个自然过程。

These can attach themselves to cytosine, one of the four chemical bases that form the "letters" of the genetic code.

它们可以附在胞核嘧啶上，胞核嘧啶是组成基因代码的"字母"的四种碱基数之一，帮助调控转录的过程。

The methyl groups are attached only to specific cytosine bases — one of the four building blocks of DNA.

这些甲基团只粘附于特定胞嘧啶碱基－DNA四个组成成分之一。

Methylation occurs naturally on cytosine bases at CpG sequences and is involved in controlling the correct expression of genes.

Methylation 在 CpG 序列位置的 cytosine 基上自然地发生而且参予控制基因的正确表现。

Mutations that occur as the result of natural processes in the cell, such as deamination caused by reaction of bases with water.

细胞中因自然过程而产生的突变，例如碱基与水反应所引起的脱氨基。

Spontaneous mutations Mutations that occur as the result of natural processes in the cell, such as deamination caused by reaction of bases with water.

自发突变细胞中因自然过程而产生的突变，例如碱基与水反应所引起的脱氨基。

The study of lattice-valued propositional logic system based on lattice implication algebra.On the bases of previous study, by using the concepts and methods of T algebras we established the lattice-valued propositional logic system LP , whose truth values domain is a lattice implication algebra, and discussed systematically the semantical and syntactical properties of LP , proved the soundness theorem 、consistency theorem、deduction theorem and the decidability of validity of the system when the truth values lattice is finite. We also discussed the relationship between the α-theorem of some premise, say A, and the closed sets that contain A.

本文在前人研究工作的基础上，利用T代数的概念与方法，建立了真值取于格蕴涵代数的格值命题逻辑系统LP，对它的语义及语法性质进行了较系统的研究，得到了它的可靠性定理、协调性定理及演绎定理等，证明了值格有限时系统"有效性"的可判定性并讨论了某一前提A下的α定理与包含A的闭集之间的关系。

The paper first introduces the basic principle of Karhunen-Loeve decomposition for stochastic processes, and outlines the essential properties of the decomposition. A method based on the Hartley orthogonal bases is proposed to decompose stochastic processes.

介绍了随机过程Karhunen-Loeve分解的基本原理，指出了其在随机过程展开中所具有的优势与局限性，针对Karhunen-Loeve分解在求解特征问题中存在的困难，采用Hartley正交基作为展开函数，发展了一类基于Hartley正交基的随机过程展开方法。

While not placing the blast at one of the bases, the defector said it could be attributed to liquid fuel used for missiles.

根据朝鲜叛逃者的说法，可能是导弹的液体燃料发生爆炸

It presents the fundamental bases of the energetics of materials, deflagration and detonation, thermochemical process of decomposition and combustion, plus combustion wave structures.

它提出的根本基础的能量的材料，爆燃和爆炸，热化学过程的分解和燃烧，加上燃烧波结构。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。