亲电基取代位置和实验值完全一致。
The substituting position of electrophilic group accord with experimental value.
发现前线轨道能量与分子的电子密度分布及取代位置均有一定依赖关系。
Between electron density distribution of molecular frontier orbital energy and the substitute position, there were some dependencies.
通过变换环上的取代位置，可以有效地调控环的电性质，从而调控单分子膜的电化学性质。
By changing the replacement position, the electrical properties of rings could be controlled effectively, so did the electrochemical properties of SAMs.
另外，在一维红外谱图中无法分辨的不同取代位置的甲基，在二维相关谱图中，可以清楚地区分开来。
Additionally, absorption bands of the two methyl substituents at different positions of the thiophene are clearly distinguished.
文章综述了各种电机的一些位置估计方法，分析了其优缺点，这些方法在很大程度上可取代位置传感器。
This paper reviewed the position estimation methods of various motors and analyzed their advantages and disadvantages. By using these methods, position sensors can be eliminated to a great extent.
首先测定了17种取代苯化合物对发光菌的急性毒性，初步探讨了苯环上不同取代基类型和取代位置对毒性的影响。
The acute toxicities of 17 substituted benzenes to Photobacterium Phosphoreum were measured, and the effects of substituted groups and positions on toxicities were discussed roughly.
结果显示对1,3-取代位置的优异选择性，并且烷基链可以是饱和的或不饱和的，并且可以含有一种或多种杂原子。
The result shows excellent selectivity of to the 1, 3 - substitution positions, and the alkyl chain may be saturated or unsaturated and may contain one or more heteroatoms.
利用PLC高速计数模块直接将外部编码器发出的脉冲读入，在PLC内部编程，通过程序控制完全能取代位置控制器的所有功能，从而省出位置控制器这一环节。
The pulse is directly read out by utilizing PLC high-speed counting module, the function of the locating controller can be achieved by program, thus the locating controller are saved.
利用PLC高速计数模块直接将外部编码器发出的脉冲读入，在PLC内部编程，通过程序控制完全能取代位置控制器的所有功能，从而省出位置控制器这一环节。
The pulse is directly read out by utilizing PLC high-speed counting module, the function of the locating controller can be achieved by program, thus the locating controller are saved.
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