最可能持续时间

NAA is the most sensitive marker of early brain damage decreased NAA correlate with prolongation of seizure time and loss of neurons; the change of Lac reflected moderate to severe injury of neurons;Increase in Cho may represent gliosis;decreased GABA can be detected when neuronal damage becomes severe.

1H MRS检出的NAA是反映早期脑损害的最敏感指标，其含量因癫痫持续时间延长和神经元数量减少而降低；Lac可以反映中等程度以上的神经元损害； Cho值升高，可能反映胶质增生；GABA值降低在神经元损伤较严重时可检出。

The Catalans have been insisting for some time now: their general director Txiki Beguiristain is weaving his net, and coach Frank Rijkaard has given his consent. But surprisingly, those holding a trumph card may in fact be Anderlecht.

这支加泰罗尼亚俱乐部对他的关注已经持续了一段时间…………但令人惊讶的是，最可能得到他的俱乐部是Anderlecht。

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。

Indeed, without such a centralized administration, the execution of any such gigantic scheme as Pan-Germanism, extending necessarily over a long series of years and requiring continuity of policy and careful preparations for eventualities known of necessity only to a few, would be utterly impossible. In England and in France, power is distributed in too many hands to make continuity of policy and vigor of administration really possible; in Russia, the country itself is too large to be directed efficiently by a single head; in Germany, the happy mean is found.

只有在集权化政府的环境下，象泛日耳曼主义（Pan-Germanism）这样宏大的蓝图的执行（它要求的时间跨度长达持续数年，要求政策的连续性和仔细的准备以使得只有必要的一小部分人才知道最终结果）才能获得最大限度的可能；在俄国，国家本身的过于臃肿使得由一个寡头来进行有效管理成为不可能；在德国，人们找到了最佳方法。

The existence of so many anomaly stages is probably observed for the first time in numerous cases of satellite thermal infrared researches on earthquakes;③ Each stage lasted quite a long time, with the longest one spanning 13 days;④ An evident geothermal anomaly gradient was distributed along the Longmenshan seismic fracture zone, and such a phenomenon might also be discovered for the first time in satellite thermal infrared earthquake researches.

这在众多的卫星热红外地震研究案例中，可能是迄今为止异常阶段最多的一次；③、单个阶段的持续时间长：最长达13天；④、如此沿龙门山地震断裂带分布的明显的地热增温异常现象，可能在卫星热红外地震研究案例中是首次发现。

This base period may last from a minimum of two to a maximum of about eight months, during which your aerobic system is developed and maximized.

这段打基础的时间可能需要持续至少2个月，多则差不多8个月左右。在这段时间内你的有氧系统得到发展并最被最大化。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。