group velocity

常見例句

雙語例句

• When the medium density increases (with more atoms), the slow group velocity decreases.
  儅介質(zhì)的密度增加時(shí)（包含更多的原子），群速度就降低。
• In light of this finding, scientists have wondered whether single photons travel at the group velocity or the signal velocity.
  在這些發(fā)現(xiàn)的基礎(chǔ)上，科學(xué)家曾經(jīng)懷疑，是否單個(gè)光子可以達(dá)到“群速度”和“信號(hào)傳播速度”。
• The main wave packet of a single photon travels no faster than c in any medium, and can be delayed up to 500 ns in a slow light medium where the group velocity is slower than c.
  單個(gè)光子的波包的傳遞速度在介質(zhì)中不比光速快，而且可以在慢光介質(zhì)中延遲到500納秒。 慢光介質(zhì)中的群速度比光速慢。

權(quán)威例句

• The number of passengers in the U.S. paying for first-class, business-class and full-price economy airfares has halved in the past five years, from 18% to 9%, says the Velocity Group, an aviation consultancy.
  FORBES: Magazine Article
• One of his recommendations is Jonathan Miller, a former chief executive at AOL who is now a partner at Velocity Interactive Group, a Los Angeles-based firm that invests in digital media properties.
  FORBES: Magazine Article
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