查询词典 useful direction

The direction and strength of electric field are all useful controlling parameters.

电场的方向和强度都是有效的控制参数。

Compared with standard Crank-Nicholsonscheme in the same computational time and resource, the method has two characteristics: small truncation error of in the transverse direction and high accuracy. It is a useful tool for designing optical waveguide devices.

与标准格式的有限差分光束传播法相比，该算法在几乎不增加计算时间和计算机内存资源的情况下，结合了道(来源：122eA22BC论文网www.abclunwen.com)格拉斯格式的有限差分光束传播法截断误差小和宽角多步法所具有较高精度的优点，是光波导器件理想的数值模拟工具。

By the support of National Nature Science Foundation, some key problems of CVT were investigated, and some useful results were obtained as follows:(1) The relations between metal-belt misalignment in axial direction and transmission parameters were studied. By designing curved generating line pulley or adjusting the axial displacement of pulley, the degree of misalignment of the metal belt was decreaed.

本文在国家自然科学基金重点项目(编号：59835160)，国家教委重点项目教技司(98121号，重庆市科委攻关等项目的资助下，对CVT传动的若干关键问题进行了研究，本文的工作为CVT传动的研究、应用和开发奠定了基础。

Data mining is the procedure to get novel, interesting and potentially useful information from large database, which can help us to acquire knowledge and rules. It is a brand-new subject and research direction which is widely used in financial, retail trade, telegraphic communication and research on structure of the genic sequence.

数据挖掘是从大量数据中提取人们感兴趣的、事先未知的、潜在的有用信息，而挖掘出某种知识和规则的过程，它是一个全新的学科和研究方向，在金融业、零售业、电信业以及基因序列组成研究等领域获得了广泛的应用。

It is useful for the direct and inverse solution of geodesic problem and applying in digital elevation model and 3D GIS model. geodesic coordinate system ; direction angle ; geodesic line ; differential relationship

本文则进一步探讨测地坐标的一些微分性质和微分关系式。1 基于测地坐标的大地线的二阶微分方程按照曲面的内蕴几何学，由

The law which goes by his name is a useful rule for predicting the direction of an induced current.

这条用他的名字命名的定律，是判断感生电流方向的极有用的定则。

In this thesis, I use useful experience and research results both from the predecessors of foreign countries and China for reference, besides I combined media literacy with the current educational situation and the students' characters in high middle schools of China. On this basis, I summarize three aspects of media literacy as follows: lectures on special subjects; subjects interfusion of media literacy education; educational activities by parents under the direction of schools.

本文在借鉴国外及我国前人研究的基础上，结合我国高中教育状况和高中生特点，提出了高中生媒介素养教育三个方面的内容：学校媒介素养专题教育的内容；学校媒介素养教育的学科渗透的内容；学校指导家庭媒介素养教育的内容，并对各个方面的内容进行了分析和阐述。

It is useful - if a bit tardy - to review the Reagan facts rather than the legend, for it shows how the most mundanely accurate analysis might have led us in a different direction.

它是有用的-如果有些迟缓-审查里根的事实，而不是传说，它显示了如何最精确的分析mu ndanely可能导致我们在不同的方向。

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

It was now calm, and I had a great mind to venture out in my Boat, to this Wreck; not doubting but I might find something on board, that might be useful to me; but that did not altogether press me so much, as the Possibility that there might be yet some living Creature on board, whose Life I might not only save, but might by saving that Life, comfort my own to the last Degree; and this Thought clung so to my Heart, that I could not be quiet, Night or Day, but I must venture out in my Boat on board this Wreck; and committing the rest to God's Providence, I thought the Impression was so strong upon my Mind, that it could not be resisted, that it must come from some invisible Direction, and that I should be wanting to my self if I did not go.

这时，海面上已风平浪静，我很想冒险坐小船上那失事的船上看看。我相信一定能找到一些对我有用的东西。此外，我还抱着一个更为强烈的愿望，促使我非上那艘破船不可。那就是希望船上还会有活人。这样，我不仅可以救他的命，更重要的是，如果我能救他活命，对我将是一种莫大的安慰。这个念头时刻盘据在我心头，使我日夜不得安宁，只想乘小船上去看看。我想，这种愿望如此强烈，自己已到了无法抵御的地步，那一定是有什么隐秘的神力在驱使我要去。这种时候，我如果不去，那就太愚蠢了。所以，我决意上船探看一番，至于会有什么结果，那就只好听天由命了。

I use an example quoted by Hu Jiaqi:"It is reported that America separates the DNA of a kind of virus by making use of genetic technology and combines it with another kind of DNA. Finally, they get a kind of virulent biological agent called a "pyrotoxin". Someone discloses in private that 20 grams of such a kind of biological agent could result in the global death of 6 billion people due to infection."

我在这里例举胡家奇所引用过的例子："据报道，美国利用转基因技术，将一种病毒的DNA分离出来，与另外一种DNA进行结合，拼结成一种剧毒的"热毒素"生物战剂，且私下有人透露，这种生物战剂只需20克，就可以导致全球60亿人全部感染死亡。"

Waiting, for the queers and the coons and the Reds and the Jews.

等待着疯子和黑人还有红色共产主义者还有犹太人