selectivity的例句（selectivity在句子中的用法）

• Selectivity of human migration long been the focus of demographers and economists. 人口遷移的選擇性一直以來都是人口學(xué)家和經(jīng)濟(jì)學(xué)家關(guān)注的焦點(diǎn).
• These reactions catalyzing oxidation of alcohol - OH groups have high yield and selectivity. 使用的催化劑對醇 羥基 的氧化具有高度的選擇性并有很高的轉(zhuǎn)化率.
• The results demonstrate that this catalyse has an excellent activity and selectivity this reaction. 結(jié)果表明該催化劑對此合成反應(yīng)具有很高的催化活性和產(chǎn)物選擇性.
• The mesh size selectivity can be expressed by logistic or Richards equation. 網(wǎng)目選擇性常以Logistic或Richards方程來描述.
• A hydrocracking catalyst with high selectivity to middle distillates was developed. 開發(fā)了一種具有較高的中油選擇性的加氫裂化催化劑.
• It'shows a thousandfold selectivity for fluoride over other common anions. 它對氟離子的選擇性比其它普通陰離子高幾千倍.
• The selectivity of extractant is high and only Au, Pd , Hg ete. are extracted. 該萃取劑選擇性高,它僅萃取Au 、 Pd和Hg等幾種元素.
• The Endo - conversion 、 Exo - yield andExo - selectivity are 96.46 % 、93.12 % and 96.54 % respectively. Endo -THDCPD 轉(zhuǎn)化率為96.46%,Exo -THDCPD 收率為93.12%,選擇性為96.54%.
• The advertisement audience has the greatly strengthened selectivity and elusion to the media advertisement. 廣告受眾對媒介廣告有極強(qiáng)的選擇性和回避性.
• The DM membrane possesses fairly good selectivity, chemical stability and scale stability. DM陽極隔膜具有好的選擇性 、 化學(xué)穩(wěn)定性和尺寸穩(wěn)定性.
• Immobilized metalloporphyrins avoid to form dimerization and have high stability, activity and shape and size selectivity. 負(fù)載后的金屬卟啉配合物不僅避免了二聚,提高了穩(wěn)定性和活性,而且表現(xiàn)出較高的形狀和尺寸選擇性.
• S - PPESK showed high catalytic activity and excellent dimerization selectivity under low reaction temperature conditions. S-PPESK在較低的溫度條件下對異丁烯的低聚反應(yīng)表現(xiàn)出了很高的催化活性和二聚反應(yīng)選擇性.
• Improved yield and selectivity are observed while applying this technology on diazo - coupling reactions. 該技術(shù)在重氮化、偶合反應(yīng)中的應(yīng)用,取得了高于常規(guī)反應(yīng)器的收率和純度.
• Silylation, P modification and MgO modification can improve p - DEB selectivity greatly. MgO改性提高對二乙苯選擇性最為明顯.
• Analogically, selectivity of 95 % - 97 % were att ained with Lindlar catalyst poisoned by lead. 以Lindlar催化劑合成芳樟醇,脫氫芳樟醇轉(zhuǎn)化率為99%～100%, 合成芳樟醇選擇性為95%～97%.