无特征的

Any of various large birds of prey of the New World family Cathartidae or of the Old World family Accipitridae, characteristically having dark plumage and a featherless head and neck and generally feeding on carrion.

兀鹫西半球大陆新域鹫科或东半球大陆鹫鹰科大型捕食猛禽的一种，特征是具有黑色羽毛和无毛的头和颈，食用腐肉

As an unconstrained optimization problem, it has a lot of methods to solve for its special structure.

作为一个无约束最优化问题，由于其结构的特殊性，存在很多利用其结构特征的有效算法。

Geochemical analyses include 'total'(concentrated HNO3 -HCl digestion) and chemical forms (three step sequential digestion, reducible, oxidizable and residual forms) of heavy metals Cu, Zn, Pb, Cr,Fe and Mn, iron oxides dithionite-citrate-bicarbonate (DCB and ammonium in the dark extraction as the estimation of total and amorphous iron oxides, respectively, total sulfur and organic matter.

化学分析包括重金属（Cu、Zn、Pb、Cr和Fe、Mn）"总量"（浓HNO3、HCl提取，非严格的总量）、形态（三步提取法，可还原态、可氧化态和残渣态）、氧化铁（连二亚硫酸钠－柠檬酸钠－重碳酸钠提取和草酸铵提取分别估计总氧化铁和无定形氧化铁）、总硫和有机质，并比较了DCB提取前后样品磁性特征的变化。

Results The TCD manifestations of patients with semicoma have no characteristic change.

结果 浅昏迷患者的TCD表现无特征性改变，当出现中度昏迷或深昏迷时，颅内幕上结构损害患者TCD表现与文献报告相似，颅内幕下结构损害、代谢及弥漫性脑病患者大脑中动脉血流速度改变不明显，但死亡的18例病人中有13例出现了收缩期末血流速低于舒张期末血流速。

Results The TCD manifestations of patients with semicoma have no characteristic change. In moderate or deep coma patients, who have intracranial supratentorial injury, the TCD manifestations are similar to related documents. The blood flow velocity of middle cerebral artery of patients with subtentorial brain injury or metabolic or diffused brain diseases have no obvious change. But in the 18 dead cases, there are 13 whose blood fiow velocity of end systolic stage are lower than those of end diastolic stage.

结果 浅昏迷患者的TCD表现无特征性改变，当出现中度昏迷或深昏迷时，颅内幕上结构损害患者TCD表现与文献报告相似，颅内幕下结构损害、代谢及弥漫性脑病患者大脑中动脉血流速度改变不明显，但死亡的18例病人中有13例出现了收缩期末血流速低于舒张期末血流速。

Results The TCD manifestations of patients with semicoma have no characteristic change.In moderate or deep coma patients,who have intracranial supratentorial injury,the TCD manifestations are similar to related documents.The blood flow velocity of middle cerebral artery of patients with subtentorial brain injury or metabolic or diffused brain diseases have no obvious change.But in the18dead cases,there are13whose blood fiow velocity of end systolic stage are lower than those of end diastolic stage.

结果 浅昏迷患者的TCD表现无特征性改变，当出现中度昏迷或深昏迷时，颅内幕上结构损害患者TCD表现与文献报告相似，颅内幕下结构损害、代谢及弥漫性脑病患者脑中动脉血流速度改变不明显，但死亡的18例病人中有13例出现了收缩期末血流速低于舒张期末血流速。

At the same time, monitor the TCD characteristics, observe the frequency spectrum form and the blood flow velocity in cranial vessels. Results The TCD manifestations of patients with semicoma have no characteristic change. In moderate or deep coma patients, who have intracranial supratentorial injury, the TCD manifestations are similar to related documents.

结果 浅昏迷患者的TCD表现无特征性改变，当出现中度昏迷或深昏迷时，颅内幕上结构损害患者TCD表现与文献报告相似，颅内幕下结构损害、代谢及弥漫性脑病患者大脑中动脉血流速度改变不明显，但死亡的18例病人中有13例出现了收缩期末血流速低于舒张期末血流速。

Recently the theories and methods of fountainless navigation using earth physical characters have been noticed by research institutions and scholars of all the world.

近年来，利用地球物理特征的无源导航理论和方法引起了国内外研究机构和学者的注意，开展了地形匹配导航技术、重力辅助导航技术、地磁辅助导航技术等研究。

Recently the theories and methods of fountainless navigation using earth physical characters have been noticed by research institutions and scholars of all the world. Researches on terrain matching navigation, gravity assistant navigation and geomagnetism assistant navigation have been developed.

近年来，利用地球物理特征的无源导航理论和方法引起了国内外研究机构和学者的注意，开展了地形匹配导航技术、重力辅助导航技术、地磁辅助导航技术等研究。

The changes of correlation coefficients and regression equation between the serum testosterone levels and hematocyte parameters did not show regularity and characteristics.

血清睾酮含量和血液细胞的相关系数和回归方程无明显的规律性和特征性。

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。