查询词典 vector-potential

Firstly, the effect of axial vector meson 〓(1282) upon the moment of inertia and the masssplittings of solitons are studied in the model, which comes from a U(2)〓×U(2)〓chiral meson theory.

首先，从一个U(2)〓× U(2)〓手征介子理论出发，通过模型，考察轴矢量介子〓(1282)对孤立子转动惯量和重子多重态质量劈裂的影响。

The quark axial vector current operator includesnot only the Pauli spin operator, but also a relativistic reduction operator and a quark-antiquark pair creationoperator.

在质子静止坐标系，夸克轴矢量流除了Pauli自旋算符外，还有相对论修正项和海夸克对产生湮灭项。

The process of axiomatization of vector theory is also studied.

另外还简单介绍了向量的公理化过程。

X, Y and Z describe a vector which is the axis of rotation.

注意，对于这里的旋转轴而言，是有方向区别的。

In this study, the classification of Chinese Babesia spp. infective to cattle were carried out by the classical methods and molecular biotechnology, and investigated the vector ticks of an unidentified Babesia sp. isolated from Xinjiang province by the experimental transmission, and observed the developmental forms of Babesia sp. in the engorged Hyalomma anatolicum anatolicum females;We developed the indirect hemoagglutination test for Babesia bigemina, and evaluated its effect in the sero-survey;We made slow-released injection of imidocarb, and estimated its efficacy on the treatment and prevention of Babesia bigemina infection by the laboratory work and the field tests. The major results were presented as following:1. Discovery of a bovine Babesia sp.

本研究以牛的巴贝斯虫为研究对象，采用传统技术与分子生物学技术相结合的方法对在我国已分离的牛巴贝斯虫病主要病原进行了分类学研究，在实验室内运用蜱传播试验对分离于我国新疆的牛的巴贝斯虫未定种的媒介蜱及其传播方式进行了详细的研究，采用组织抹片方法对牛的巴贝斯虫未定种在小亚璃眼蜱饱血雌虫体内的发育过程进行了观察；建立了间接血球凝集试验诊断方法，并对其在血清学调查中的应用效果进行了考察；研制了咪唑苯脲缓释注射剂，并通过实验室工作和田间试验对防治效果进行了评价。

The genome DNA was extracted from the red blood cells or blood of the infected sheep and goats which include as isolates of ovine Babesia from these different geographic areas. The gene specific primers were devised according to the pubulished 18srRNA sequence at GenBank. The target DNA segment was amplified by polymerase chain reaction, the PCR product was ligated into PGEM-Teasy vector.

用分离于四个地区的羊的巴贝斯虫感染实验动物，自感染羊的红细胞或全血中提取基因组DNA，根据GenBank中已发表的巴贝斯虫18S rRNA序列设计两对羊巴贝斯虫特异性引物，通过PCR扩增目的基因片段，将扩增产物连接到PGEM-Teasy载体中，经酶切鉴定，PCR分析，进行序列测定，结果显示羊巴贝斯虫四个分离株的18S rRNA基因大小为1800bp左右。

The feasibility of constructing stable vector-host systems in Bacillus subtilis was investigated from two aspects...

本文从两方面探讨了构建稳定的枯草杆菌载体—宿主系统的可行性。

The vector pGPST will play a significant role in gene expression in Bacillus subtilis.

该载体将在研究外源基因在枯草芽孢杆菌中表达发挥重要作用。

According to the fundamental of vector control,a digital closed-loop control system of permanent magnet synchronous motor based on dsPIC30F6010 was designed and a model of permanent magnet synchronous motor in the estimation two phase rotating reference frame was introduced and an extended back electromotive force equation was deduced.

根据永磁同步电动机矢量控制的基本原理，设计了一种基于 dsPIC30F6010的无位置传感器永磁同步电动机控制系统，并介绍了在估算两相旋转坐标系下的PMSM模型，推导出了反电势方程的扩展形式。

When a rotating voltage vector is injected to the motor at standstill, there is a microinching when the voltage phase is line to the direct axis of the motor. Then the current will decrease due to the back electromotive force. The initial mover position is identified by this change.

电压相位和电机直轴重合时，产生的电磁推力超过负载阻力，电机有一微动，由于反电势的作用电流就会降低，通过检测电流矢量的变化来估计动子的初始位置。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。