With the design and implementation of DCFS ( Dawning Cluster File System), this dissertation deeply discusses the key technologies of a cluster file system and studies problems in designing the servers of a cluster file system.

1、

Design and implement DCFS on the Dawning 4000L Cluster. Present methods to evaluate a cluster file system and define scalability of read/ write and metadata operations.

在曙光4000L上设计并实现曙光机群文件系统DCFS，给出了机群文件系统性能评价的方法，定义了读写带宽性能和元数据吞吐率的可扩展性度量。

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2、

Finally the helix double-clad fiber is discussed by using this method, and the conclusion is that it is better than other truncated inner cladding DCFs.

最后用这种方法对螺旋型双包层光纤进行分析，得出它比一般缺陷型双包层光纤优异的结论。

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3、

Load-Balance Policy in DCFS, the Dawning Cluster Filesystem

曙光机群文件系统DCFS负载平衡策略

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4、

The metadata throughput of DCFS is 7.391 times as PVFS on average.

DCFS元数据吞吐率的性能平均比PVFS高6.391倍；

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5、

And the overall response time of DCFS is 18.2% as PVFS in the synthesis workload experiment.

DCFS在综合负载测试中表现出比PVFS更好的性能，全局响应时间为PVFS的18.2%。

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6、

Comparison between MOPB04_ 600 and 455,972 sequences from GenBank+ EMBL+ DDBJ+ PPB revealed that the homology were low ( less than 30%). This implied that it was a newly found DNA sequence.

通过与GenBank+EMBL+DDBJ+PDB中的455972个序列进行同源性比较，同源性均小于30%，表明该片段为一新发现的序列。

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7、

Sequence analysis revealed that 28 clones were from previously described genes, but the remaining 7 clones did not match any sequences in GenBank/ EMBL/ DDBJ database, indicating that they may be novel genes.

序列分析揭示28个克隆是来自以前描述过的基因，而另外7个在GenBank/EMBL/DDBJ数据库没有匹配序列，可能代表新基因。

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8、

The results showed that weight gain, feed intake, feed conversion ratio and mortality rate were not significantly affected by level of DDGS or enzyme inclusion in the diet, or their interactions ( P0.05).

结果表明，肉仔鸡体增重、饲料采食量、饲料转化率以及死亡率均未受酒糟或添加酶制剂以及二者互作的影响（P0.05）。

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9、

In both trials, there was a significant difference in gross energy digestibility between the corn-soybean meal control diets and diets with 30% DDGS ( P 0.05).

结果表明：两个试验的玉米-豆粕型日粮和30%酒糟日粮的能量利用率差异极显著（P0.01）。

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10、

Different levels of DDGS and DLM were added to basic diet which corresponding reduction in the proportion of corn and soybean meal as experiment diet.

试验在相应减少玉米和大豆粕比例的基础饲料中，分别添加不同水平的DDGS和DLM作为试验饲料。

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11、

DDGS and MVR treatment of waste mash from corn could fully reclaim its nutrients and such treatment has high economical efficieny.

DDGS及MVR蒸发浓缩技术处理玉米废醪液能够充分回收其中的营养物质，经济性好；

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12、

The quality of DDGs when adding acid protease was also studied and found out that the protein content of the DDGS was not reduced but increased.

同时也考察了添加酸性蛋白酶对D DGS品质的影响，结果表明酸性蛋白酶的使用并不减少DDGS的蛋白含量，而且增加蛋白质含量。

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13、

Probing Into Application of Dried Distillers Grains with Solubles ( DDGS) in Swine Diets

干酒糟及可溶物（DDGS）在猪饲料中利用的探讨

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14、

Accordingly, to obtain quality and high value-added DDGS products through the improvement of relative techniques and equipments has become the common interest for alcohol enterprises.

通过工艺及装备技术提升获取优质、高附加值DDGS产品成为酒精企业共同追寻的目标。

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15、

The use of distillers dried grains with solubles ( DDGS) in poultry nutrition

可溶性干酒糟（DDGS）在家禽营养中的应用

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16、

Scope Economy of DDGS

DDGS的规模经济

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17、

DDGS how DDGS looks from an American perspective?

如何从美国的玉米加工业前景看待？

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18、

Effects of Different Levels of Xylanase and DDGS on the Performance and Nutrient Utilization of Broilers

木聚糖酶添加量与DDGS配比对肉鸡生产性能和养分利用的影响

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19、

Assessment of nutritive value for layer with DDGS

DDGS对蛋鸡营养价值评定

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20、

Effects of DDGS on growth performances and blood thyroid hormones in Cherry Valley Duck

DDGS对樱桃谷鸭生产性能及血液甲状腺激素的影响

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