Screening of microbe for asymmetric reduction of prochiral aryl ketones and characterization of the reduction reaction;
不对称还原前手性芳香酮微生物的筛选及反应特性
Ethylene polymerization by novel asymmetric dinuclear titanium metallocene complexes;
新型不对称双核茂金属钛催化剂催化乙烯聚合
Analysis of asymmetric running and its protection circuit for triphase asynchronous motor;
三相异步电动机相间功率不对称现象分析及保护电路设计
Quantitative Description of Anisotropy and Asymmetry by Using Rock Permeability Parameters;
渗透率参数的各向异性和不对称性的定量描述
Facet Joint Asymmetry as a Radiologic Feature of Lumbar Intervertebral Disc Herniation in Children and Adolescents;
小关节不对称—青少年腰椎间盘突出症的放射学特征
Optimal Design for Cross Section of Expressway Based on Asymmetry Development;
基于不对称开发的快速路横断面优化设计
Progress in dissymmetric Gemini surfactants;
不对称Gemini表面活性剂研究进展
A series of dissymmetric Gemini surfactants with the structure of(C_(12)H_(25)(CH_(3))_(2)N~(+)(CH_(2))_(4)N~(+)(CH_(3))_(2)C_mH_(2m+1)),denoted as C_(12)-4-C_m(m is 14,16,18),have been synthesized with N,N-dimethylalkylamine and 1,4-dibromobutane as the initial reagents.
以N,N-二甲基脂肪胺和1,4-二溴丁烷为原料,合成了一系列具有不同疏水链的不对称Gemini表面活性剂C12H25(CH3)2N+(CH2)4N+(CH3)2CmH2m+1(C12-4-Cm,m=12,14,16,18),并通过1H NMR(核磁共振氢谱)、MS(质谱)和元素分析等方法鉴定其结构。
Due to the structural dislocation between the transmitter and the audience,there exists a semiotic dissymmetry in the advertising text from the surface framework to its deeper logic.
由于传播者与受众之间的结构性错位,从广告文本的表层结构到深层逻辑都存在着符号不对称性。
In the present circumstances of information dissymmetry, the consumption of the consumers must be based on the knowledge of the quality, function and uses of certain products.
本文在分析信息不对称与消费者消费行为关系的基础上,探讨了消费者行为的选择问题。
The paper discusses a reduplication form about structural models,formation condition and its dissymmetry of“lao A ba A de”、“xi A ba A de”and“BA ba A de”in Dongzhi dialect.
本文讨论了安徽东至话中一种形容词重叠形式“老 A 巴 A 的”、“稀 A 巴 A 的”和“BA 巴 A 的”结构形态、成立的条件及其不对称性,并试图从语义的角度解释其不对称的原因和补偿方式。
Asymmetry of saccade latency between bilateral eyes;
双侧眼球扫视运动的不对称性
The disappearance of asymmetry——Electronic media and legitimacy crisis in school education;
“不对称性”的消逝——电子媒介与学校合法性的危机
Effect of optical corner cubes asymmetry on angle measurement;
双频激光干涉测角中角锥镜的不对称性对测角精度影响的分析
A new method for the preparation of polyimide asymmetric membrane from polyamicacid asymmetric membrane has been developed.
叙述了一种用成形的聚酰胺酸不对称膜亚胺化来制备聚酰亚胺不对称膜的方法，利用红外、扫描电镜和水通量作为表征手段，从亚胺化效果、孔径变化方面作了讨