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.
• 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
• 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

• 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。
• But you need awareness, some angle to get critical mass but also so people can turn to you.
  但是你们需要打响知名度，要通过一些独特的角度来获得关键的多数客户，这样才能吸引大量客户。
• 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。
• Nuclear fission has contributed to our society some new phrases& critical mass and critical size.
  原子核裂变给我们的社会带来了一些新词汇“临界质量”和“临界大小”。
• The people born in the 1980s really make up a critical mass in China.
  出生于上个世纪80年代的人真正构成了中国的一种核心力量。
• The greater the enrichment, the less the critical mass.
  浓缩程度越大，临界质量越小。
• Often some sort of competency center is a good approach to building a critical mass of the appropriate skills.
  某种形式的能力认证中心通常是建立大量急需合适技能的好途径。
• 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。
• If Tesco gambles small and wins, competitors will have time to copy it before it reaches critical mass.
  如果乐购小赌一把赢了，竞争对手在它达到临界质量之前有足够时间进行仿制。
• 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。