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单词 critical mass
释义

Definition of critical mass in English:

critical mass

noun
  • 1Physics
    The minimum amount of fissile material needed to maintain a nuclear chain reaction.

    Example sentencesExamples
    • As the seventh bucket was poured in the mixture reached critical mass initiating a sustained chain reaction.
    • Its basic principle is assembling a critical mass of a radioactive element with properties to spark a swift chain reaction.
    • Such explosions are caused by the accumulation of a critical mass of material falling onto the neutron star from a partner.
    • Its main task is the enrichment of uranium, which provides critical mass in nuclear devices.
    • Just two months earlier, the Observer published internal documents indicating that there had been eight breaches of safety rules intended to prevent critical masses of fissile material being brought together.
  • 2The minimum size or amount of resources required to start or maintain a venture.

    some of our new industries are now reaching critical mass
    Example sentencesExamples
    • Perhaps a piecemeal approach prevents many interventions from reaching the required critical mass.
    • We had to dominate the top markets to create a critical mass for marketing and achieve economies of scale in advertising.
    • To reach a critical mass, we need to take a stand, and we need to awaken our neighbours, our parents, our friends.
    • That means that once they reach critical mass, their profit margins fatten as revenues grow.
    • But until the market reaches a critical mass, dealers have to turn to other revenue streams to keep going.
    • The shorter the time you need to reach that critical mass of users, the sooner your site pays off.
    • As long as you have less than the critical mass of material, nothing happens.
    • Stephens said the company is talking to a number of larger domain name registrars about using their services as a channel to reach the required critical mass of customers.
    • It's been a long time coming, but it seems like the British blogging scene is finally starting to reach critical mass.
    • Taken together, the surveys point to the need for critical masses to be present in order for development to proceed.
    • Some technologies reach a critical mass of adoption in a short period of time and are great market successes.
    • Until it reaches the critical mass it's aiming for, it won't take the risk of participating in government down here.
    • The multicultural marketplace has reached critical mass, and it requires a new approach.
    • Any good movement requires a critical mass.
    • Only then did it make the transition from great technology to great technology with a critical mass of users.
    • This is even more reason to ensure we create a critical mass in the market place.
    • Have you reached a critical mass that creates a marketing momentum of its own?
    • Some of our new industries are now reaching critical mass - big enough to matter in the real world.
    • It has a roadmap to integrate these to produce something cheaper and smaller, but that first requires a critical mass to justify the investment of course.
    • There's a lot of good stuff, but it just hasn't reached a critical mass where it will establish itself in the marketplace.
 
 

Definition of critical mass in US English:

critical mass

nounˈˌkrɪdəkəl ˈmæs
  • 1Physics
    The minimum amount of fissile material needed to maintain a nuclear chain reaction.

    Example sentencesExamples
    • Such explosions are caused by the accumulation of a critical mass of material falling onto the neutron star from a partner.
    • Its basic principle is assembling a critical mass of a radioactive element with properties to spark a swift chain reaction.
    • As the seventh bucket was poured in the mixture reached critical mass initiating a sustained chain reaction.
    • Just two months earlier, the Observer published internal documents indicating that there had been eight breaches of safety rules intended to prevent critical masses of fissile material being brought together.
    • Its main task is the enrichment of uranium, which provides critical mass in nuclear devices.
  • 2The minimum size or amount of something required to start or maintain a venture.

    a communication system is of no value unless there is a critical mass of users
    Example sentencesExamples
    • That means that once they reach critical mass, their profit margins fatten as revenues grow.
    • There's a lot of good stuff, but it just hasn't reached a critical mass where it will establish itself in the marketplace.
    • It has a roadmap to integrate these to produce something cheaper and smaller, but that first requires a critical mass to justify the investment of course.
    • Have you reached a critical mass that creates a marketing momentum of its own?
    • But until the market reaches a critical mass, dealers have to turn to other revenue streams to keep going.
    • Perhaps a piecemeal approach prevents many interventions from reaching the required critical mass.
    • Until it reaches the critical mass it's aiming for, it won't take the risk of participating in government down here.
    • As long as you have less than the critical mass of material, nothing happens.
    • The shorter the time you need to reach that critical mass of users, the sooner your site pays off.
    • Some of our new industries are now reaching critical mass - big enough to matter in the real world.
    • Some technologies reach a critical mass of adoption in a short period of time and are great market successes.
    • Only then did it make the transition from great technology to great technology with a critical mass of users.
    • Stephens said the company is talking to a number of larger domain name registrars about using their services as a channel to reach the required critical mass of customers.
    • We had to dominate the top markets to create a critical mass for marketing and achieve economies of scale in advertising.
    • The multicultural marketplace has reached critical mass, and it requires a new approach.
    • To reach a critical mass, we need to take a stand, and we need to awaken our neighbours, our parents, our friends.
    • Taken together, the surveys point to the need for critical masses to be present in order for development to proceed.
    • This is even more reason to ensure we create a critical mass in the market place.
    • It's been a long time coming, but it seems like the British blogging scene is finally starting to reach critical mass.
    • Any good movement requires a critical mass.
 
 
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更新时间:2024/12/23 19:27:46