常見例句The latter, which appeared in the Tang Dynasty, is to decoct the brine extracted from the ash or alkaline earth in flat plates. “煎鹽”則指提取柴灰或堿土中的鹵水,用淺而闊的盤熬干以制取鹽,這一專稱唐代始見。Rare earth luminescence materials of alkaline earth stannates have also been prepared via thermal decomposition of hydroxo stannate precursors. 利用某些新型帶羥基的堿土錫酸鹽作為前驅(qū)體,固相反應(yīng)合成摻稀土的錫酸鹽發(fā)光材料。With alkali-voron-silicon as the basis and addition of alkaline earth composite fluxing agent,a kind of leadless fluxing agent is developed. 以堿-硼-硅系統(tǒng)為基礎(chǔ),加入堿土金屬氧化物復(fù)合助熔劑,研制無鉛釉上彩熔劑。Barium Zirconate; Alkaline earth, transitional metal and rare earth stannates;Complex oxides; Monodisperse; Nanostructures; Solution-based reactions. 01鋯酸鹽;錫酸鹽;復(fù)合氧化物;單分散;納米結(jié)構(gòu);液相合成Developing alloy supporters,new Pd-only TWC,transition metal oxides and alkaline earth oxides as promoters will be the research points for TWC. 開發(fā)金屬合金載體,以及新型單鈀催化劑、過渡金屬型或稀土鈣鈦礦型催化劑是今后三效催化劑研究的熱點(diǎn)。Researches in and application of Lewis acid,Bronsted acid,alkali, alkaline earth and molecular sieve catalysts were described in detail. 對采取烷基化法和?;ê铣?,6-二烷基萘的工藝路線,尤其對所使用催化劑的研究進(jìn)展進(jìn)行了評述。 返回 alkaline earth