1 N-SING (核链式反应的)临界质量 In physics, the critical mass of a substance is the minimum amount of it that is needed for a nuclear chain reaction. (核链式反应的)临界质量 [technical]
2 N-SING (某事发生或继续所需的)足够数量 A critical mass of something is an amount of it that makes it possible for something to happen or continue. (某事发生或继续所需的)足够数量
View usage for:All yearsLast 10 yearsLast 50 yearsLast 100 yearsLast 300 years