This paper discusses some issues in nested relational databases, which mainly include the e-valuation on two normal forms PNF and NNF, missing information and the conversion form flat rela-tional schema to nested relational schema.

1、

Electron microscope scanning surface morphology and XRD analysis showed that inhibitor NNF reduce the increase in the oxygen, sulfur, to form a continuous dense FeS protection film, preventing corrosion.

电镜扫描表面形貌分析和XRD表明，缓蚀剂NNF使氧元素增加、硫元素减少，能形成连续致密的FeS保护膜，阻碍了腐蚀的发生。

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2、

For radar using purpose, The data algorithms for NNF and the adaptive a-P filtering and prediction based on "CV" model are studied emphatically.

根据实际雷达跟踪要求，对NNF数据关联算法和基于CV运动模型的自适应滤波与预测算法等作了重点研究。

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3、

The yield of winter wheat and summer maize were kept quiet low and steady when NNF was applied for more than 4 seasons.

连续四季以上不施氮使冬小麦和夏玉米产量分别稳定在1693～1807kg/hm2和4575～4782kg/hm2范围的较低水平。

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4、

Polarization curve testing found that the NNF is a hybrid inhibit, adsorption of membrane-type inhibitor.

极化曲线测试发现，缓蚀剂NNF是一种混合抑制吸附膜型缓蚀剂。

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5、

NNF for more than two seasons reduced both winter wheat and summer maize yield significantly.

连续二季和三季不施氮使冬小麦和夏玉米产量都大幅度减产；

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6、

Winter wheat yield was much reduced comparing with that of summer maize under NNF.

不施氮条件下，冬小麦的减产幅度大于夏玉米。

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7、

Dazu Stone ( Sculptures ) Carving is as famous as the Buddhist Carvings at Longmen, Dunhuang and Yungang.

大足石刻与龙门、敦煌和云冈石刻齐名.

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8、

Welcom to Gateway Site of Dazu Rock Carvings!

大足石刻的门户站点欢迎您!

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9、

Dazu Stone Carvings are superb works of Buddhist religious art.

大足石刻是佛教工艺极高的雕刻品.

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10、

And native american legend is full of mythical creatures so why would they choose ONLY big foot to add next to real creatures rather than others?

美国原住民的传说充满了神秘生物，所以为什么他们会选择大脚到图腾，而不是其他？

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11、

George Bush isn't the only Big Foot in Tokyo this week.

乔治·布什并非本周在东京的唯一的“大人物”。

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12、

I didn't think it would drive over me like Big Foot.

我没有想到它会像Big Foot一样超过我。

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13、

It comes as researchers told a new conference in Texas that they have proof Big foot is real and have even collected DNA samples.

在德克萨斯的一次会议上，研究者表示已经有证据表明大脚怪确实存在，并且他们已经采集到了一些大脚怪的DNA样本了。

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14、

Are you saying that he's with big foot's daughter?

你说他跟大脚的女儿在一起？

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15、

We haven't seen such a mystery since Big Foot, the last time a lost and found limb caused such a brouhaha was the custody fight over this guy's leg.

自从上次Big Foot时间以来我们没有再见过如此神秘的案件，上次一只断脚引起骚乱和监禁之争。

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16、

She says her favorite story so far has been covering the history of the annual Big Foot Ride. This is a two-week trail ride from the Standing Rock Reservation to Wounded Knee.

她说，目前为止她最喜欢的新闻就是报道一年一度的Big Foot Ride，这是为期两周的骑马行动，从立岩居留地到伤膝谷。

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17、

Make Furry Friend vacation memento is now achieved by making friends with Big Foot.

当和大脚（果然是野人）成为朋友以后，将获得“和野人做朋友”旅游纪念。

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18、

You know what army this is, big foot?

知道这是什么军队吗，大脚丫？

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19、

And what jumps they made! as if each big foot were a mass of springs.

他们蹦得多有劲啊！&仿佛每只大脚都是一大团弹簧。

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20、

We are the first cattery import breed "pixie-bob" the "big foot" in Hong kong.

我们是从1997年开始引进及繁殖“北美洲短尾猫”&“大脚板”。

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