selectivity [sɪˌlɛkˈtɪvɪti, ˌsilɛk-]

例句:

• 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.
  来自辞典例句
• The soldiers specialized in going out in small groups, to kill with a very high degree of selectivity.
  这些士兵擅长小股出动，执行具有高度选择性的歼敌任务。
  
• This process relies on a catalyst of high selectivity and week activity.
  这过程所靠的是一种高选择性和低活性的催化剂.
  
• Biocatalysts are the preferred choice of catalyst when high selectivity is required.
  来自SA
• Selectivity quantifies how accomplished students are when they first arrive on campus.
  来自NEWYORKER
• They will discover that selectivity based upon merit is correlated to earnings potential.
  来自WSJ