Positive and negative ion ejection in the mass range below 200 Dalton is observed for perfluorinated poly-ether surfaces subjected to electron- and ion-beam irradiation. The exciting projectiles are Ar + ions of 300 and 4000 eV and electrons of 3000 eV. The main positive ions found are ...
It is evident that negative ions are tremendously important to our health. Negative ions have the power to help the body to heal itself. Medical research has also proven that 90% of the eye diseases are the result of hypoxia (lack of oxygen). When oxygen and water supply to the eyes is...
Electron-stimulated desorption of positive and negative oxygen ions and positive, multiply charged silicon ions from thin SiO/Si films has been studied as ... Petravić,Mladen - 《Phys Rev B Condens Matter》 被引量: 12发表: 1993年 Positive and negative ions and ion-molecule reactions of sev...
positive and negative effects 正负作用 negative effects 负效果,消极效果 negative positive rule 正负定律(即中和定律) positive negative switch 正负象转换开关 negative input positive output 【计】 负输入正输出 black negative or positive 黑负或黑正 negative positive process 负-正法,负正照相工艺...
balance between the positive and the negative charged. 翻译: 空气中充满了离子,即带电粒子,并且正负电荷之间通常存在着一种粗略的平衡。 全文翻译 最近的研究声称,空气中过多的正离子对人们的身体或心理健康会产生不良影响。什么是正离子呢?空气中充满了离子,即带电粒子,通常情况下正负电荷之间存在大致平衡。但有...
Ion-mobility data based on Gerdian-condensor measurements, theoretical models of stratospheric ion chemistry, and direct mass-spectrometer determinations of positive and negative ionic species are discussed. Tables of tentative species identifications and sample profiles are provided. The applicability of ...
positive and negative— 正反 · 正负 也可见: positive形— 正形 · 正面形 · 积极的形 · 良好形 · 阳性形 negative形— 正面形 · 不利形 · 不良形 negative— 否定 · 底片 · 反面 · 橆 查看其他译文 © Linguee 词典, 2024 使用DeepL翻译器,即刻翻译文本和文档 ...
Dyanmic ion trapping for Fourier‐transform ion cyclotron resonance mass spectrometry: Simultaneous positive‐ and negative‐ion detection The conventional static electric potential used to trap ions fro fourier-transform ion cyclotron resonance (FTICR) mass spectrometry has been replaced by a... MV Gors...
points between recesses 27. Thus, positive and negative ion distribution over the same area is enhanced. Note that bar 12 includes like sections at opposite sides of the divider plate, each section including a front plate as at 28, two side plates 30, and a medial plate 31. Plates 30 and...
An attempt has been made to predict the nature of positive and negative ions up to a level of 50 km. Considerable progress has been made in recent years in the understanding of the mechanism of formation of small ions at ground levels and the altitude profile of ions presented here for the...