fire siren 中文意思是什麼

fire siren 解釋
火警笛
  • fire : n 1 火，火焰；火災；燃燒；爐火，烽火。2 射擊；火力。3 火花，閃光；光輝。4 熱情，熱烈，熱心；生氣...
  • siren : n 1 〈或 S 〉【希臘神話】塞壬〈傳說中半人半鳥的海妖，常用歌聲誘惑過路的航海者而使航船觸礁身死〉。...
  1. Now i hear another siren but it ' s not the fire engine

    現在我聽見另一鳴笛聲，但那不是消防車
  2. City ' s trail communication transmission system mainly contains : key technology of city ' s trail communication transmission, choice of transmission module, choice of building transmission network and rectification in practical projects. this thesis has principally conducted research in the following aspects : 1. it has rather thoroughly and systematically delineated the major contents in city ' s trail transportation communication system : transmission, business, wireless, specialist, monitor, broadcast, clock, power, cable, ground, auto ticket selling and checking, fas, scada, auto fire siren etc. 2

    本論文反映的主要研究成果體現在以下幾個方面： 1 、完整、系統地提出了城市軌道交通通信系統包含的主要內容：傳輸、公務、無線、專用、監控、廣播、時鐘、電源、乘客導乘及信息服務等，並提出各子系統的基本功能和要求以及與自動售檢票、 fas 、 scada 、火災自動報警等的技術介面。
  3. These changes ( the result of the doppler effect ? familiar when a siren changes pitch as a fire engine passes by ) are much easier to detect than the wobbles themselves, and researchers can thus plot them out as a curve

    這些變化是都普勒效應的結果? ?更習慣的說法是當一輛消防車經過時警報聲的變化，它們比恆星的位置移動更容易被探測到，而且研究人員能通過曲線圖的方式測定它們的具體位置。
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