critical mass

名词 n.
中文释义

英文释义

名词 n.
  1. The minimum amount of fissile material needed to support a self-sustaining nuclear chain reaction. countable,uncountable
    — […] Rhodes calculated the uranium bomb would eventually need “about 42 kilograms – 92.6 pounds,” which Rhodes then stated was approximately 2.8 critical masses. In other words, critical mass can be calculated to be about 15 kilograms.
  2. The minimum amount of something or the minimum number of people needed to trigger a phenomenon. broadly,countable,figuratively,uncountable
    — […] depending on the rare circumstance of there being a critical mass of persons whose combination of interests and resources is high enough to overcome the feasibility problem.

词形变化

critical masses plural

词汇关系

相关词
subcritical mass supercritical mass tipping point
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