steric ['sterɪk]

例句:

• Severe steric effects at the reactive carbon would impede the substitution.
  大的立体效应阻止在碳上的取代.
  
• Macromolecules cannot approach the ligand owing to steric hindrance of the matrix.
  由于载体的立体位阻的关系,大分子化合物不能接触到配基.
  
• A rather more complex case is that of steric isomerism.
  更复杂的情形是立体异构问题.