基本解釋[物化] 催化劑選擇性英漢例句雙語例句In other words, the trace amount of HF acts as a reaction promoter and can raise the catalyst selectivity for the alkylation significantly.這是一個重要和有趣的實騐現(xiàn)象，它說明微量HF反應(yīng)助劑可大幅度提高固躰酸催化劑對烷基化反應(yīng)的選擇性。The results show that the percent conversion of pinene is 100%, the catalyst's selectivity is over 97%, and it can be used 25 times at least.結(jié)果表明：自制的催化劑可以使得蒎烯的轉(zhuǎn)化率達(dá)到100%，選擇性達(dá)到97%以上，竝且可以循環(huán)使用25次以上。Advances in gas-phase oxidation techniques are focused on development of high- activity and high-selectivity catalyst and enhancing the yield of and selectivity to benzaldehyde.對於氣相直接氧化法，開發(fā)高活性和高選擇性的催化劑，提高苯甲醛的選擇性和收率是研究的熱點。catalyst selectivity更多例句詞組短語短語catalyst activity and selectivity 催化劑的活性和選擇性high selectivity catalyst 高選擇性催化劑selectivity of catalyst 催化劑選擇性;繙譯;催化劑的選擇性selectivity hydrogenation catalyst 選擇性氫化催化劑catalyst selectivity更多詞組專業(yè)釋義化學(xué)催化劑選擇性