非有效的

This thesis applies default theory which is adaptive to change to the domain of requirements engineering, introduces partial requirements specification , which helps to avoid trivial solution and obtain locally effective result whose correctness can not be absolutely guaranteed. It is similar to our method that people deal with incomplete information world by commonsense.

本文将适应变化的缺省理论应用于需求工程领域，引入部分需求规格，有助于避免平凡解，可得出局部有效但不一定必然正确的结论，这和人类用常识处理非全知世界所采用的方法很相近。

According to the statistical analysis of a-term-experimental datum,graded teaching was more effective in improving students interest of learning English and their English performances on test than the traditional ungraded teaching mode.

根据对实验结果的统计分析得知，与传统的非分层教学模式相比，分层教学能更有效地提高学生的英语学习兴趣和英语考试成绩。

The introduction and application of catalytic reformation and isomerization process in Baka refinery not only solved the problem of gasoline uprating, but also provided a effective way for the secondary processing of Ⅱ light ends .

巴喀原稳厂通过非临氢重整及异构化工艺技术的引进和应用，不仅解决了巴喀原稳厂汽油产品的升级换代问题，而且为油田Ⅱ轻烃的二次加工提供了有效途径。

The Nazarov cyclization, a powerful tool for the construction of five-membered carbocycles from divinyl ketones and related compounds, has attracted increasing attention in recent years due to its wide applications in the synthesis of complex natural and unnatural products.

Nazarov环合反应是通过二烯酮类物质和类似化合物构建五元碳环的有效方法。由于该方法广泛地应用于复杂天然和非天然产物的合成，近年来引起人们的广泛关注。

The product is in the pore structure on the graft copolymer of styrene divinyl benzene [-N amines (CH 3) 2 The ion exchange resin], the less alkaline, in the acidic, neutral and effective exchange of inorganic acid medium. and the larger size can be adsorbed molecules in aqueous solution and the use of anion.

本产品是在大孔结构的苯乙烯二乙烯苯共聚体上接枝叔胺基[-N（CH3）2]的离子交换树脂，其碱性较弱，能在酸性、近中性介质中有效地交换无机酸，并能吸附分子尺寸较大的阴离子以及在非水溶液中使用。

However, this approach conferred the resistance to not only myelopoietic cells but also tumor cells that have invaded or metastasized into bone marrow or circulating blood for nonspecific expression of the exogenous genes.

详细骨髓造血细胞中导入耐药耐辐射基因是克服放化疗对造血系统抑制作用的有效手段，但外源基因的非特异性表达也增加了残存在血液或者侵犯至骨髓中的肿瘤细胞耐受性。

Result Extracts of Myrtus communis Linn.leaves not only effectively scavenged O2(superscript -), O H,DPPH and ONOO(superscript -), but reduced or prevented DNA oxidative damage caused by OH and inhibited lipided pexoxidation.

香桃木叶的非精油组分3种提取物均能有效清除O2、OH、DPPH和ONOO，减轻或消除OH对DNA的氧化损伤，抑制脂质过氧化，其中甲醇－水提取物清除O2和ONOO能力最强，乙酸乙酯提取物清除OH和DPPH的效果最佳。

To investigate the high risk elements analysis of chronic graft versus host disease.Explore early diagnosis of late-onset noninfectious pulmonary complications.

研究目的慢性移植物抗宿主病是异基因造血干细胞移植后的主要并发症，探讨慢性移植物抗宿主病发病的高危因素，探讨迟发性非感染性肺部并发症的早期诊断，为临床有效防治cGVHD提供指导依据。

Approximate theoretical calculation model was determined for quantum wires on nonplanar substrates, with which the lateral effective width of quantum wires was estimated.Ⅵ.

五、确立了适用于非平面衬底上的量子线的理论计算近似模型，并用之估算量子线的横向有效限制尺寸。

Indeed, both nonstatistical and statistical audit samples should be selected in a way that they may be expected to allow the auditor to draw valid inferences about the population.

事实上，非统计与统计的审计样本都应该按照一种让审计师能够做出对总体的有效推断的方式去抽取。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。