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critical mass

英 [ˌkrɪtɪkl ˈmæs]

美 [ˌkrɪtɪkl ˈmæs]

n.  (核链式反应的)临界质量

电力

牛津词典

    noun

    • (核链式反应的)临界质量
      the smallest amount of a substance that is needed for a nuclear chain reaction to take place

      柯林斯词典

      • (核链式反应的)临界质量
        In physics, thecritical massof a substance is the minimum amount of it that is needed for a nuclear chain reaction.
        1. N-SING (某事发生或继续所需的)足够数量
          Acritical massof something is an amount of it that makes it possible for something to happen or continue.
          1. Only in this way can the critical mass of participation be reached.
            只有这样才能凑足参与人数。

        英英释义

        noun

        • the minimum mass of fissionable material that can sustain a chain reaction
          1. the minimum amount (of something) required to start or maintain a venture
            1. the battle for the computer market has now reached critical mass
            2. there is now a critical mass of successful women to take the lead
            3. they sold the business because it lacked critical mass

          双语例句

          • Correlation of critical mass velocity has been provided.
            文中还给出了临界质量流速的试验关联式。
          • So critical mass was a consideration as well as technical excellence.
            因此关键的合并既是一种考虑也是一种技术优势。
          • In this case, 20 percent is often a good proxy for critical mass in a household.
            通常,20%的家庭拥有量是技术达到临界量的一个合理标志。
          • The next thing it hit, a year later, was critical mass.
            一年以后,它进入下一个阶段,也就是临界量。
          • It is almost as if you have reached critical mass and the Hundredth Monkey Theory is activating.
            它几乎像是你们到达了临界质量而激活了第一百只猴子理论。
          • This creates what is known as a critical mass of nuclear material, which releases its energy instantaneously as atoms inside it split in an uncontrolled chain reaction.
            这会造成核原料所谓的临界质量,当其中的原子在无法控制的连锁反应中分裂时,能在瞬间释放出能量。
          • The second reason concerns critical mass.
            第二个原因跟临界点有关。
          • I read as much as I could find for background to my recent novel, Critical Mass.
            我在写最新小说《临界物质》时,为了了解背景知识读了所有我能找到的书。
          • Nuclear fission has contributed to our society some new phrases& "critical mass" and "critical size". Correlation of critical mass velocity has been provided.
            原子核裂变给我们的社会带来了一些新词汇&临界质量和临界大文中还给出了临界质量流速的试验关联式。
          • But the overall intent of UDDI can only be achieved if a critical mass of service providers is created.
            但是只有服务提供者的临界物质被建立,UDDL的全部意图才能实现。