selectivity的例句（selectivity在句子中的用法）

• Selectivity of human migration long been the focus of demographers and economists. 人口迁移的选择性一直以来都是人口学家和经济学家关注的焦点.
• These reactions catalyzing oxidation of alcohol - OH groups have high yield and selectivity. 使用的催化剂对醇 羟基 的氧化具有高度的选择性并有很高的转化率.
• The results demonstrate that this catalyse has an excellent activity and selectivity this reaction. 结果表明该催化剂对此合成反应具有很高的催化活性和产物选择性.
• The mesh size selectivity can be expressed by logistic or Richards equation. 网目选择性常以Logistic或Richards方程来描述.
• A hydrocracking catalyst with high selectivity to middle distillates was developed. 开发了一种具有较高的中油选择性的加氢裂化催化剂.
• It'shows a thousandfold selectivity for fluoride over other common anions. 它对氟离子的选择性比其它普通阴离子高几千倍.
• The selectivity of extractant is high and only Au, Pd , Hg ete. are extracted. 该萃取剂选择性高,它仅萃取Au 、 Pd和Hg等几种元素.
• The Endo - conversion 、 Exo - yield andExo - selectivity are 96.46 % 、93.12 % and 96.54 % respectively. Endo -THDCPD 转化率为96.46%,Exo -THDCPD 收率为93.12%,选择性为96.54%.
• The advertisement audience has the greatly strengthened selectivity and elusion to the media advertisement. 广告受众对媒介广告有极强的选择性和回避性.
• The DM membrane possesses fairly good selectivity, chemical stability and scale stability. DM阳极隔膜具有好的选择性 、 化学稳定性和尺寸稳定性.
• Immobilized metalloporphyrins avoid to form dimerization and have high stability, activity and shape and size selectivity. 负载后的金属卟啉配合物不仅避免了二聚,提高了稳定性和活性,而且表现出较高的形状和尺寸选择性.
• S - PPESK showed high catalytic activity and excellent dimerization selectivity under low reaction temperature conditions. S-PPESK在较低的温度条件下对异丁烯的低聚反应表现出了很高的催化活性和二聚反应选择性.
• Improved yield and selectivity are observed while applying this technology on diazo - coupling reactions. 该技术在重氮化、偶合反应中的应用,取得了高于常规反应器的收率和纯度.
• Silylation, P modification and MgO modification can improve p - DEB selectivity greatly. MgO改性提高对二乙苯选择性最为明显.
• Analogically, selectivity of 95 % - 97 % were att ained with Lindlar catalyst poisoned by lead. 以Lindlar催化剂合成芳樟醇,脱氢芳樟醇转化率为99%～100%, 合成芳樟醇选择性为95%～97%.