几乎无

Though the almost unbiased estimator was still a biased estimator, it has smaller bias than corresponding biased estimator.In this paper, we first study the properties of the almost unbiased generalized ridge estimator and the almost unbiased generalized Liu estimator.

但有偏估计毕竟偏离参数的真值，因此学者们又提出了几乎无偏估计的概念，虽然几乎无偏估计仍然是有偏估计，但是它比相应的有偏估计有更小的偏度。

And then some ellipses that AUGR estimator is better than the OLS estimator and AUGL estimator is better than the OLS estimator are given, respectively.Second, the definition of the almost unbiased unified biased estimator is proposed. This definition includes the familiar almost unbiased estimators in literatures, and it is the unified expression of the familiar almost unbiased estimators. Followed the biased and variance are compared of AUUB estimator and the unified biased estimator, respectively. AUUB estimator has smaller bias than UB estimator and the variance of AUUB estimator is between the variance of UB estimator and 4 times of the variance of UB estimator. Finally the properties of AUUB estimator are discussed. The conclusion is gained that there are parameters made AUUB estimator is better than OLS estimator in terms of their mean square error. The sufficient and necessary condition that AUUB estimator is admissible is given. The ellipse is given that AUUB estimator is

然后给出了几乎无偏统一有偏估计的定义，该定义包括了文献中常见的几乎无偏估计，实现了常见几乎无偏估计的统一表达式；接下来我们比较了几乎无偏统一有偏估计与统一有偏估计的偏度与方差，得出了几乎无偏统一有偏估计比统一有偏估计有较小的偏度，几乎无偏统一有偏估计的方差介于统一有偏估计的方差与统一有偏估计的方差的四倍之间的结论；最后我们对统一有偏估计的主要性质作了讨论，证明了存在参数K，S使得几乎无偏统一有偏估计在均方误差意义下优于最小二乘估计的结论，给出了几乎无偏统一有偏估计为可容许估计的充要条件，还给出了在均方误差阵意义下几乎无偏统一有偏估计优于最小二乘估计的椭球。

All of these aspects need to be improved.Considering the disadvantages of the two kinds of the deicers, great amounts of the science data are referred in the research experiment, by developing the main materials and the additives, a new kind of deicer: PAL is founded. Not only does PAL remain the advantages of the traditional deicer such as cheap materials and low freezing point:-43.8 C, but it has the character of CMA, low corrosion to steel and concrete.

针对上述除冰剂的缺点，本课题收集了国内外大量的相关科技文献，通过对主体物料和添加剂两方面的改善，寻找到一种新型除冰剂PAL，它既保留了传统除冰剂的优点，原料廉价易得，低冰点，可达-43.8℃；又兼有CMA的优点，对钢铁几乎无腐蚀，对混凝土无不良影响。

In her novel, you can't see the feudal exploitation and oppression,the kind of bloody invasion of imperialism, But she presented an "eventless tragic "to us by remembering all sorts of people and their lives in her hometown."Biography of Hulan River" is: an eventless tragic of the people; a soul tragic of the stander-by; a great tragic of the women.

在小说中，看不见封建的剥削和压迫，也看不见帝国主义那种血腥的侵略，而是通过追忆家乡的各种人物和生活画面，作者写出了一部"几乎无事的悲剧"：一部几乎无事的民族悲剧，是一部看客的灵魂悲剧，是一部伟大的妇女悲剧。

The release in vitro of insulin from Ins-NC can be described by double exponential equation.

研究表明注射用胰岛素纳米囊具良好的外观及再分散性，冷冻干燥前后平均粒径及包封率几乎无变化，初步稳定性实验表明，注射用胰岛素纳米囊在4℃及室温较稳定，含量，包封率，平均粒径等无变化，体外释药符合双指数模型。

The establishment of the likin system was the measure that the Qing Dynasty had to be made. But it evolved as the phenomenon that the toll-gates were set up at no places and no goods wasnt levied the tax. Its harm was so deep that it was thought of as one of the disasters in modern times.

厘金制度的设立，是"不得忆"而为之的无奈之举，然而却演变成几乎无地不设卡，无物不抽厘，其危害之烈竟成为近代公认的祸患之一，这是任何人也没有想到的。

The characteristics of skull bones are; underdevelopment of paramostoid process of the occipital bone; unjointing of zygomatic process from its arch with no supraorbital foramen; formation of semiglobal structure by petrous temporal bone;no naso -maxillary notch between nasal bone and nasal process of premaxilla; unobvious facial surface of lacrimal bones;well-developed nasal process of premaxilla; no facial crest of maxillae's exterior;...

头骨的主要特征是：枕骨的颈交不发达，眶上突不与颧弓相连，无眶上孔；颞骨岩部形成半球形鼓泡，鼻骨与颌前骨的鼻突之间不形成鼻颌切迹；泪骨几乎无颜面部；颌前骨的鼻突发达；上颌骨外面无面嵴；腭骨发达；犁骨腹缘后部不与鼻腔底壁接触；下颌骨支下缘无血管切迹、垂直部后下方有一角突。

Amino to acetyl phenol, in have technology of two kinds of production domestic and internationally, acetic anhydride craft of the United States, acyl changes temperature to have 75 ℃ only, acyl changes mother liquor not apply mechanically, deputy reaction is little, of production thick tasting is kind of white almost, purificatory craft is very simple, activated carbon dosage only 2~3%, the Kun that its product does not have glow material almost in different third alcohol inferior the sealed impurity of amine impurity and minim, settleclear lightness it may not be a bad idea, the product quality that acetic anhydride craft produces is good, but close rate low, cost is high.

对乙酰氨基酚，在国内外有两种生产工艺，美国的醋酐工艺，酰化温度只有75℃，酰化母液不套用，副反应少，生产的粗品几乎是类白色，精制工艺就非常简单，活性炭用量仅2~3%，其产品在异丙醇中几乎无红光物质的醌亚胺杂质及微量的未知杂质，澄明度也好，醋酐工艺生产的产品质量好，但收率低、成本高。

In her novel, you can't see the feudal exploitation and oppression,the kind of bloody invasion of imperialism, But she presented an "eventless tragic "to us by remembering all sorts of people and their lives in her hometown."Biography of Hulan River" is: an eventless tragic of the people; a soul tragic of the stander-by; a great tragic of the women.

在小说中，看不见封建的剥削和压迫，也看不见帝国主义那种血腥的侵略，而是通过追忆家乡的各种人物和生活画面，作者写出了一部&几乎无事的悲剧&：一部几乎无事的民族悲剧，是一部看客的灵魂悲剧，是一部伟大的妇女悲剧。

In her novel, you can't see the feudal exploitation and oppression,the kind of bloody invasion of imperialism, But she presented an "eventless tragic "to us by remembering all sorts of people and their lives in her hometown."Biography of Hulan River" is: an eventless tragic of the people; a soul tragic of the stander-by; a great tragic of the women.

在小说中，看不见封建的剥削和压迫，也看不见帝国主义那种血腥的侵略，而是通过追忆家乡的各种人物和生活画面，作者写出了1部&几乎无事的悲剧&：1部几乎无事的民族悲剧，是1部看客的灵魂悲剧，是1部伟大的妇女悲剧。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。