The valency of titanium and the structure state of Ti3+ in BaO-SiO2-B2O3-TiO2 system glasses had been studied by using electron spin resonance (ESR) .是什么意思_The valency of titanium and the structure state of Ti3+ in BaO-SiO2-B2O3-TiO2 system glasses had been studied by using electron spin resonance (ESR) .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句