Both ionization and excitation lead to eletronic transitions that may be the emission of light.电离和激发都将导致可能伴随有光发射的电子跃迁.Forbidden transitions are those for which dipole radiative transitions are not allowed by the selectio...
The transitions of bisphenol A and phenolphthalein oligo -- polysulfones were inves - tigated by DSC.本工作用示差扫描量热法(DSC)研究了双酚A型和酚 酞 型两种聚砜预聚物的转变.Forbidden transitions are those for which dipole radiative transitions are not ...
There has been a busy start to polling in today's local elections.今天地方选举的投票一开始就人头攒动。And all the time next spring's elections are drawing closer.明年春天的选举即将来临。The signs suggest that the elections will be non-viole...
At that moment the tiger commenced ambling towards his victim.就在这时,老虎开始缓步向它的猎物走去.The gait has a typical roll when ambling or walking.走路时步伐为典型的滚动步伐.He was ambling along the road.他从容轻松地沿路行步....
Celia's letter, handwritten and addressed to Sam, was brief.西莉亚亲笔写下的致萨姆的信篇幅不长.Celia was in full spate as usual, so I just sat there waiting for her to finish.西莉亚像往常一样口若悬河说个不停, 我只得坐在那儿等着她把话说完.Celia tried countering a...
他现在把变量叫做流,变量的变化率叫做流数.He now called a varrable quantity a fluent and its rate of change , the fluxion.于是, 在正常点火时,叶片温度的变化率约为30度/秒.Thus, during a normal light-up the temperature charge rate on the blade is about 30 degrees/...