查询词典 four vector

PCRs were performed on genomic DNAs of four pear cultivars Sand pear, Huangguan pear, Xueli pear, Yali pear using primers derived from sequences of previous published PPO. The target bands were recovered and purified. The fragments were ligated with the plasmid of pGEM-T Vector by the method of direct T-A cloning.

以4种不同来源的梨基因组DNA为模板，根据已经发表的多酚氧化酶基因序列设计引物，利用PCR技术，克隆到了鸭梨、雪花梨、砂梨、黄冠梨约1.8 kb的完整多酚氧化酶基因，将纯化后的扩增产物克隆到质粒pGEM-T vec-tor中，转化DH-5α菌，挑选阳性克隆进行测序。

In order to obtain high LIDT antireflective coatings on the nonlinear optical crystal LiB3O5, this dissertation focuses its main interests on the following four aspects: Firstly,frequency doubling and tripling AR coatings were designed on the LBO crystal using vector addition method.

本文围绕提高非线性光学晶体LiB3O5上增透膜的激光损伤阈值(laser induced damage threshold， LIDT)，这一中心问题，主要开展了四方面的工作。

This semester I chose four subjects: Advanced Function, Calculus and Vector, Keyboard and English.

这学期我选了英语、钢琴、高等数学、微积分和向量四门课。

T . There are six dependent variables; the pressure p , density r , and temperature T (which is contained in the energy equation through the total energy Et ) and three components of the velocity vector ; the u component is in the x direction, the v component is in the y direction, and the w component is in the z direction, All of the dependent variables are functions of all four independent variables.

有六个供养变数；压力 P ，密度，俄，与温度 T （这是包含在能量方程通过总能量 ET ）和三个组成部分的速度矢量；美国组件是在 X 方向的 V 组成在 Y 方向，并在 W 组成，是在 Z轴方向，所有的依赖变量的功能，所有4个独立变数。

By means of flow field software PHOENICS,the flow field of four-strand T type tundish in a specific steel plant is simulated in this paper and the velocity vector diagram and streamline graph of the hot metal flowing under different settings of the flow control device s are analyzed and compared.

应用流场计算软件PHOENICS对某厂四流T型中间包流场进行了数值模拟，分析比较了不同控流装置下钢液流动的速度矢量图和流线图。

By using abundant message contained in the four Stokes profiles, it can determine the polarization state of radiation from the sunspots and measure accurately the vector magnetic field within sunspots.

它利用4个完整的Stokes轮廓所蕴含的丰富信息，完全确定辐射的偏振状态，从而精确地测定太阳黑子区的矢量磁场。

The main elements affecting load coupling characteristics among channels were analysed based on joint space dynamics equations of Stewart platform, and four kinds of load coupling evaluation index were presented with the matrix and vector norm theory.

基于Stewart平台关节空间动力学方程，分析了影响通道间负载交联耦合的主要因素，采用矩阵和向量范数理论提出了4种负载交联耦合评价指标。

Thus, only spatial components of the four-dimensional vector potential are needed to be considered in our work.

这样，只有胶子场四维矢势的空间分量需要考虑。

Moreover, the ability to provide four different shRNAs from a single expression vector greatly reduces the potential for viral resistance to develop.

此外，能够提供四种不同rnai从单一表达载体大大减少潜在的病毒抗药性发展。

If it is declared, that R600 have320 streamprocessors, then actuality the chip contains only 64 blocks, each of which has on one scalar and one vector (4D) processor, which consists of four components, controlled by one block.

如果是申报，而且r600已经流320处理器，那么现状芯片只含有64座每有一个标量和一个向量处理器，它由四部分组成，由1座。

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。