critical mass

• n. 临界物质

英英释义

Noun:

1. the minimum amount (of something) required to start or maintain a venture;

   "the battle for the computer market has now reached critical mass"
   "there is now a critical mass of successful women to take the lead"
   "they sold the business because it lacked critical mass"
   

2. the minimum mass of fissionable material that can sustain a chain reaction

例句

用作名词 (n.)

1. Quite simply, the atria are transected and resutured to reduce the critical mass required for the maintenance of AF.
   手术操作非常简单，心房被切开再缝合来减少维持房颤所需的临界物质。