It is unfavorable to study MS of aminoglycosides using electron impact ionization.
使用电子轰击离子化方法研究氨基糖甙类是不理想的。
Electron impact-induced dissociation by hydrogen and its isotopic molecule will occur in edge plasma.
在边界等离子体中氢及其同位素分子与电子碰撞可以发生解离反应。
The electron impact and field desorption mass spectra of 10 2,4-diamino-6-substituted quinazoline sulfonamides were investigated.
研究了10种2，4-二氨基-6-取代磺酰胺喹唑啉类药物的电子电离及场解吸质谱。
Based on photoemission effect. we design a laser photoemission electron gun for electron impact ionization source of time of flight mass spectrometer.
基于光电效应原理。我们设计了一个新型脉冲激光光电子枪，它可以作为飞行时间质谱的电子碰撞电离的电离源。
The formation of anode plasma in external magnetic field MID is derived from the pulsed discharge and electron impact on the surface of anode polymer.
聚乙烯阳极外磁绝缘离子二极管阳极等离子体的形成基于阳极聚乙烯膜表面脉冲放电过程和阴极电子轰击效应。
A new electron impact storage ion source has been designed for time of flight mass spectrometers with a high mass resolving power and high sensitivity.
电子轰击存贮型脉冲离子源是为高分辨率、高灵敏度飞行时间质谱仪设计的新型离子源。
Mass spectra (MS) of cholesterol esters and halides were obtained by means of Electron Impact (EI), Field Desorption (FD) and Chemical Ionization (CI).
研究了胆甾醇酯类和胆甾醇卤代物的电子轰击电离（EI）、场解吸电离（FD）、化学电离（CI）的质谱。
A method combining the relativistic multichannel theory with the multichannel quantum defect theory is presented to calculate electron impact excitation.
介绍了用相对论多通道理论结合量子亏损理论计算电子碰撞激发过程的方法。
Methods: Volatile oil was separated by solvent extraction and analysed by gas chromatography coupled with electron impact ionization-mass spectrometry (GC-MS).
方法：采用溶剂浸渍方法提取冬凌草中的挥发性成分，用GC -MS方法对冬凌草挥发油的化学成分进行分析。
The study of atomic inner-shell ionization cross-sections by low-energy electron impact is significant in both theoretical researches and practical applications.
低能电子碰撞原子内壳层电离截面测量的研究在理论和实际应用方面都具有重要意义。
Using moderate resolution capabilities of a desk time-of-flight (TOF) instrument, the fragmentation regularity from electron impact mass spectra of vitexin was studied.
利用台式飞行时间质谱的中分辨本领，研究了牡荆素的电子轰击质谱的裂解规律，对裂解途径进行了完全的指认。
In other words, the light used to observe the electron emits so much energy that its impact alters the electron's behavior.
换句话说，用于观察电子的光发出的能量大到其冲撞足以改变电子的运行方式。
Objective To analyze the shielding of the radiation generated by electron accelerators and is impact on environment.
目的分析电子加速器探伤机产生的轫致辐射的屏蔽及对环境的影响。
There are impact factor to be discussed such as solvent polarity, nucleofuge, attract electron group the nunucleophilicity of nucleophilic reagent.
探讨碱性、溶剂极性、离去基团、吸电子基团、亲核试剂的亲核性对反应影响。
Impact rupture suface of the composites was observed by scanning electron microscope, and the load deformation temperature and mechanical properties were tested.
通过扫描电镜观测了复合材料冲击断面的形貌，测试了复合材料的负荷变形温度和力学性能。
At the same time, discuss about the impact factor to nucleophilicity such as the number of attract electron group, ability of attract electron and the nucleophilic substitution reaction part.
并且对亲核试剂的体积效应、溶剂效应对亲核性影响，底物上吸电子基团的数目、吸电子能力对亲电性的影响，以及亲核取代反应的发生部位受哪些因素影响进行探讨。
The multichannel R-matrix code is employed to compute the collision strengths for electron-impact excitation of pentacid Mg ion.
考虑了内壳层电子激发的组态相互作用后，采用R矩阵方法计算了电子碰撞类锂碳离子的共振激发碰撞强度。
Conclusion: HCl and HAc result in the decrease of excitation temperature and electron density. HAc has more obvious impact on excitation temperature and electron density.
结论：醋酸、盐酸使等离子体激发温度、电子密度降低，醋酸比盐酸对等离子体激发温度、电子密度影响更显著。
This paper briefly describes the theoretical deduction of the cross section of electron -ion impact excitation in Coulomb -born approximation.
本文扼要阐述了在库仑波玻恩近似下，电子与离子碰撞激发截面的理论推导。
Focused on the distinguish of electron beam vapour deposition and magnetron sputtering, and the impact of various factors of electron beam vapour deposition.
着重讨论了电子束蒸镀法与磁控溅射法的区别以及电子束蒸镀法的各种影响因素。
From the mechanical property, medium-pressure electron beam welding is better than that of high-pressure, especially the impact toughness.
从力学性能比较，中压比高压电子束焊接接头力学性能要好，尤其是冲击性能。
The impact test, the thermal shock test and the scanning electron microscopy were used to investigate the effect of rare earth oxide on the adhesiveness between the glass coating and the base metal.
利用斑点试验、点蚀试验、电化学测试及扫描电镜等方法 ，研究了熔敷温度、保温时间和稀土添加量等工艺参数对热熔敷法制备的玻璃涂层耐蚀性的影响 ，探讨了添加稀土提高玻璃涂层耐蚀性的机理。
The impact test, the thermal shock test and the scanning electron microscopy were used to investigate the effect of rare earth oxide on the adhesiveness between the glass coating and the base metal.
利用斑点试验、点蚀试验、电化学测试及扫描电镜等方法 ，研究了熔敷温度、保温时间和稀土添加量等工艺参数对热熔敷法制备的玻璃涂层耐蚀性的影响 ，探讨了添加稀土提高玻璃涂层耐蚀性的机理。
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