| 单词 | critical mass |
| 释义 | critical mass (once / 24831 pages) n Critical mass is the minimum amount of something required to start or maintain any project or venture. In order for a new ice cream store to succeed, the need for it must reach critical mass. Any movement or venture has to reach critical mass to carry on and succeed. The critical mass of a popular band would be the point at which their popularity starts to explode. In nuclear physics, critical mass is the smallest mass of material that will start a chain reaction in a nuclear bomb or reactor. Both kinds of critical mass begin chain reactions. WORD FAMILYcritical mass: critical masses USAGE EXAMPLESIt reached critical mass in the past year or so. New York Times(Dec 28, 2016) It is really satisfying to build up a critical mass of protesters and stop a horde of riot cops. The New Yorker(Dec 21, 2016) “Do they really need to do this to get to critical mass in rare diseases?” Wall Street Journal(Dec 14, 2016) 1n 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 Hyper amount the relative magnitude of something with reference to a criterion 2n the minimum mass of fissionable material that can sustain a chain reaction Hyper mass the property of a body that causes it to have weight in a gravitational field |
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