查询词典 fourth-class

Only with such characteristics, the movement equations can be expressed as matrices, and the idea of transforming the movement equations to the simplest form through a nonlinear transformation can be realized;(2) The form of Zi =Yi + YTH2i Y + Y7H3i Y(2)+ Y(2)T H4i Y(2)+ YTH5i Y(3) is adhibited in the nonlinear transformation, so that the multivalued problem caused by the nonlinear transformation is avoided, and the higher order transformation can be taken next;(3) The fourth order nonlinear transformation matrices H21,H31,H41 and H51 are derived, by which the original movement equations of electric power system is transformed to Jodan form in Z space;(4) By use of the fourth order nonlinear transformation, the approximate expression of the stability boundary is obtained, in Z space it is Z1= 0,in Y space it is Y1 + YTH21 Y + YTH31 Y(2)-i- Y(2) TH41 Y(2)+YTH51 Y(3)= 0;(5) The criterion used in this paper to judge whether the system critical unstable is simple and quick;(6) The method used in this paper is a direct method, and no need to construct an energy function.

正是由 于电力系统的运动方程具有这样的特性，才能写成矩阵的形式，通过非线性变换将电力系统的运动方程变换为最简单的线性形式的思想才能得以实现；（2）将通常运用于电力系统暂态稳定性分析的Normal Form变换的形式由 Yi＝ Zi＋ ZTh2riZ变形为 Zi＝ Yi＋YTH2iY＋YTH3iY（2）＋Y（2）TH4iY（2）＋YTH5iY（3），从而使得在对持续故障轨线实施同样的非线性变换以确定临界切除时间时，避免了非线性变换带来的多值性的问题，而只有在没有多值性问题的困扰下，才能采用较高阶的变换：（3）推导出了将原始电力系统系统的运动方程变换到Z空间的约当形式的非线性变换矩阵H21、H31、H41、HS1：（4）在运用四阶了「线性变换的情况下，给出了受扰动后系统的稳定边界的近似的解析表达，在Z空间为Z1=0，在y空间为： Y1+YTH21Y+YTH31Y(2)+Y(2)TH41Y(2)+YTH51Y(3)=0 （5）确定临界失稳的判据简单、快捷：对于一个复杂的电力系统，其稳定边界是相当复杂的一个高维曲面，即便是已知系统稳定边界的解析表达，要求出系统持续故障轨线何时与这一高维曲面相交，在数学上几乎是不可能实现的。

The fourth series cars were the first Aurelias to be available in left-hand drive; fourth series Aurelias were the first ones to be imported to the US in any number.

第四系列车是要提供第一Aurelias左；第四个系列Aurelias是要输入任何数字美国最早。

The seed embryoes were penetrated by 〓 ion beams of 75 MeV/u and the seed endosperms were implanted by the proper degraded 〓 ions, and soluble protein of the seedling in M1 generation was divided into 5 sections to analyze their changes at different molecular weight. 1 In comparison with control, the relative content of the second section (molecular weight is heavier in all sections) of all irradiated materials got down, while the relative content of the fifth section (molecular weight is the lightest) of those went up. 2 The penetrating seeds made the relative content of the first section (molecular weight is the heaviest) and the third section (mid-molecular weight) drop, while the fourth section went up. Moreover, the changes of the third section and the fourth section of the penetrated materials were clearly different from those of the implanted materials. 3 The difference between implanted embryo and implanted endosperm existed in deeper dropping of the first section and higher rising of the fifth section on relative content of soluble protein of the latter. 4 On irradiated materials at lower doses, there were exceptional changes of soluble protein, it may be thought that there was excited effect of low dose.

1.75MeV／u 〓O〓离子经过适当降能后注入小麦种子的不同部位和贯穿整个种子，对其M1代幼苗的可溶性蛋白质组分以及电泳中不同区段蛋白质组分相对含量加以分析，结果表明：1）同对照相比，随着辐照剂量的增加，所有辐照材料第二区段蛋白质组分的相对含量下降；而第五区段蛋白质组分的相对含量升高。2）种子的贯穿处理，同时也引起第一区段和第三区段蛋白质组分相对含量的下降以及第四区段的升高；其中第三、四区段的变化明显区别于注入效应。3）注入胚和胚乳的区别在于后者第一区段蛋白质组分相对含量的较大下降和第五区段的较大提高。4）小剂量辐照的材料，可溶性蛋白质组分的变化异常，可能与低剂量辐射兴奋效应有关。

Woman operator in Bangalore giving directions as though she were in Manhattan and looking out her window:"Yes, we have a branch on Seventy-fourth and Second Avenue, a branch at Fifty-fourth and Lexington ..."

她指引方向时表现得好像她就在曼哈顿看着窗外一样：&是的，我们在2大街74号有分店，在列克星敦54号有分店……&

In the fourth of the article, writer will discuss the change orientation of modern traditional political culture and its research contents concentrates primary in the below aspects: one is that we should purge society configuration patriarchal clan system and boost up people's democratic consciousness; the second is that authority idea change into nomocracy thinking; the third one is that effect a radical cure of worship power and cultivate the consciousness of people's right; the fourth one is that finishing the change from subject consciousness to civic consciousness; the last one is that carrying on the change from attachable consciousness to paddle ones own canoe.

在本文的第四部分，笔者通过对社会转型时期传统政治文化的变化趋向的考察，归结为以下五个方面：一是肃清家长制作风，增强人们的民主意识；二是人治思想向法治思想转变；三是根治权力崇拜意识，培养人们权利本位的观念；四是从子民意识向公民意识转变；五是从依附意识向独立自主意识转变。

On January fourth, the president-elect left his house in Chicago to join his family in Washington and prepare to take office. He will be inaugurated as the forty-fourth president of the United States, and the first black president, on January twentieth.

1月4日，当选总统奥巴马与家人一起离开芝加哥的家起身前往华盛顿，准备就任美国总统，他将在1月20日宣誓就任美国第四十四任总统，这也是美国第一位黑人总统。

When we imagined the fourth dimension, it was as if we were treating the entirety of three-dimensional space in a particular state as a single point, and drawing a fourth-dimensional line to another point representing space as it is in a different state.

当我们想象第四维的时候，我们将整个第三维想象成了一个点，然后画一条四维的线。

I mentioned last night that it is necessary for you to pay attention to something which is Fourth-dimensional , and which Knows Itself to be Fourth-dimensional—and that is called Joining .

昨晚我提到，你必须把焦点对准第四度空间之物（只有那个东西「真正」知道自己属於第四度空间），这即是所谓的「结合」。

I mentioned last night that it is necessary for you to pay attention to something which is Fourth-dimensional , and which Knows Itself to be Fourth-dimensional-and that is called Joining .

昨晚我提到，你必须把焦点对准第四度空间之物（只有那个东西「真正」知道自己属于第四度空间），这即是所谓的「结合」。

It requires that you become defenseless . It requires that you become still-meaning , that you are exercising no willfulness in the form of thinking , which obscures your ability to join with That which is Fourth-dimensional , and thereby access your experience of your Fourth-dimensionality , your divinity , your presence Here in the Kingdom of Heaven .

它只要求你「不设防」，它只要你静下来，这意味着，你不再靠你的念头来发挥意志力，那会混乱了你与第四度空间真理实相结合的能力，难以体验「你」第四度空间的面目、你的神性、你在天国这儿的存在。

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。