二化性

These above problems, which are very important and valuable in agricultural crops area monitoring, are currently less researched. Hence, in this paper, seven types of common texture and five vegetation indices were respectively added into TM multispectral bands to classify using three different methods, which are Minimum Distance, Maximum Likelihood and Support Vector Machine, and analyze the effect on winter wheat identification accuracy by comparing the classification results. The contexture include Mean, Variance, Homogeneity, Contrast, Dissimilarity, Entropy, Variance, Angular Second Moment and Correlation, and the vegetation indices are RVI, SAVI, RDVI, NDWI and SLAVI.

为此，该文将平均值、方差、均一性、反差、相异性、熵、角二阶矩、灰度相关7种纹理信息以及比值植被指数、土壤调整植被指数、重归一化植被指数、植被液态水含量指数、有效叶面积植被指数5种植被指数信息分别加入到TM多光谱数据中，同时还进行了最佳波段选择，利用最小距离、最大似然和支持向量机3种方法进行分类提取小麦，研究了不同特征信息对小麦测量精度的影响。

Sixteen of the 30 patients were diagnosed as bicuspid aortic valve. The ascending aortic media were histologically abnormal in 23 patients.

在本组30例患者中16例为先天性主动脉二瓣化畸形，23例主动脉瘤壁病理结果显示主动脉壁弹力纤维断裂（6例）、稀少（1例）和中、重度黏液性变（16例）。

It is noticeable that the canonizing critical narrative on Ba Jin's Capriccio on My Past consists of three levels: 1.the author's self-narrative; 2.the narrative of the public; 3.the narrative of the academia.

对《随想录》的经典化叙述包含三个层次：一是巴金的自我叙述；二是公众的期待性叙述；三是学院派的知识分子叙述。

This article asserts that classicalization narrative on Ba Jin's Capriccio on My Past includes three aspects: 1.the author's self-narrative; 2.the public's narrative in expectancy; 3.scholastic intellectuals'narrative.

对《随想录》的经典化叙述包含三个层次：一是巴金的自我叙述；二是公众的期待性叙述；三是学院派的知识分子叙述。

The facts indicate that apart from the asymmetric induction of chiral diamine backbone,sterically hindered substitute groups on the aromatic rings,and the presence of sp~3-hydridized amino donors and its N,N\'-disubstituted groups in chiral SalanCrX complexes all play important roles in controlling polymer stereochemistry and enantioselectivity.

研究发现除了手性二胺骨架的不对称诱导作用，苯环上的大位阻取代基、N，N\'-二取代基的位阻作用以及N原子上sp~3杂化的供电子效应都对调控聚合物的区域和对映体选择性有很大作用。

Compared with the unactivated P polyelectrolyte film, the activated form P/PMMA polyelectrolyte film obtained by adopting the technology of the invention has better absorbency, room-temperature conductivity, electrochemical stability and the interface stability of electrolyte and lithium electrode; the performance of a lithium secondary battery prepared by using activated electrolyte is obviously better than the performance of the lithium secondary battery prepared by using the unactivated polyelectrolyte; the invention has simple technology, short reaction time, and convenient and easy condition for technologized production.

采用本发明技术获得的活化型P/PMMA聚合物电解质薄膜相比未活化的P聚合物电解质膜，有更好的吸液性和室温电导率，更好的电化学稳定性及电解质和锂电极的界面稳定性；用活化后的电解质制备的锂二次电池性能明显好于未活化聚合物电解质制备的锂二次电池；本发明工艺简单，反应时间短，为工艺化生产提供了简便易行的条件。

QN 〓PHAL,〓PHAL and 〓PHAL were quaternized by refluxing with benzyl bromide to give ligands 8, 9 and 10 respectively. 2. The chiral ligands were applied to the AD reaction of olefins with NMO as co-oxidant and PEG (400 MW) or PF〓 as reaction media.

以奎宁和奎尼定为原料分别与1，4-二氯-2，3-二氮杂萘反应制备〓PHAL和〓PHAL，然后通过〓PHAL、〓PHAL及〓PHAL与苄基溴的季铵化反应制备单季铵盐手性配体8、9和10。

Then we applied these chrial ligands to asymmetric borane reduction of w-bromoacetophenone and diketones.

将其应用于前手性单酮及二酮的还原中，其中双方酰化脯氨酸在1，6-二苯基-1，6-己二酮的还原反应中可获得最高为90％的ee值。

In this thesis, the electrical and optical properties of the InGaN light-emitting diodes were analyzed by the temperature-dependent electroluminescence and photoluminescence systems.

中文摘要本论文利用变温光激发萤光系统以及电激发光系统，针对氮化铟镓结构的发光二极体做了一系列的光性与电性分析。

It was found that one of the fragments was similar to the Peroxidase gene located on the rice chromosome 1 completely, another fragment was partially similar to the protein Phosphorylase gene located on the rice chromosome 12 with 99.99% homology.

同源性均在99％以上。其中一个与位于水稻第一号染色体的过氧化物酶基因的部分片段有100％相似性。另一个与位于第十二号染色体上的蛋白磷酸化酶基因有99.99％的同源性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。