tempering ['tempərɪŋ]

例句:

• It's a new process for tempering steel.
  这是一种新的炼钢方法.
  
• There are three main operations in the heat treatment of steel: hardening, tempering and annealing.
  钢的热处理操作主要有三种,即: 淬火, 回火和退火.
  
• For real tempering this time we have to thank the Rightists.
  真正讲锻炼,这一回还是要感谢右派.
  
• Celtic manager Neil Lennon is already tempering expectations with reminders that he will struggle to hold onto his squad.
  来自BBC