elongations

例句:

• Most of the specimens show distinct elongations of components.
  多数标本的组份呈显著的拉长现象.
  
• These fibers are characterized by having high strengths , high elongations and good to excellent elastic recovery.
  这些纤维的特点是具有高强力, 高伸度和优异的弹性恢复.
  
• The figure will undergo most curious elongations and contractions.
  来自D. Brewster
• The tiny elongations in the stars' orbits grow and become locked into place, forming a bar.
  来自SA