1. 1百萬瓦(中國大陸常稱「兆瓦」;台灣「兆」通常指大得多的數字,用百萬瓦較不易混)

    A megawatt is a million watts. A watt is a small unit of power — how much energy something uses or makes at one moment — so a megawatt is the size you use for a power station, a big wind farm, or a factory, not a lamp. A hair dryer might use about a thousand watts (one ); a megawatt is a thousand times that. Electricity companies, engineers, and news about energy use the word. There is also an adjective use: a megawatt plant, meaning it runs at that power. Though actually people often mix watts (power right now) with watt-hours (energy over time). A megawatt-hour is a different, related idea: power times hours. For , lock megawatt to a million watts of power.

組成mega- + watt. mega- is the scientific prefix for a million, from Ancient Greek μέγας (mégas, great). watt is the small unit of power, named after James Watt.

同家族的字

  • wattthe small unit of power; a megawatt is a million of them
  • kilowattsame watt, with kilo- for a thousand
  • megabytesame mega-: a million

原始詞典資料2 筆記錄

以下是外部詞典記錄的用法,摘錄並精簡格式,我們還沒有寫成教學內容。上面的說明才是我們自己寫的;有些用法可能上面已經講過了。

megawattnoun

  • 1

    One million (1 000 000) watts, an amount of power large enough to power such things as an entire commercial building or a small passenger aircraft. (Consuming 1 megawatt during a duration of 1 hour consumes 1 megawatt-hour of energy.)

    • Holonyms: GW, gigawatt < TW, terawatt < PW, petawatt
    • Meronyms: mW, milliwatt < W, watt < kW, kilowatt

megawattadj

  • 1

    Exceptionally powerful, intense, or enormous in impact.

    • I also love the way you always greet me with a megawatt smile.
    • It has been nearly 30 years since Warren's first major hit, Laura Branigan's “Solitaire,” and her mega-watt success has seldom dimmed.

摘錄自 英文維基詞典 English Wiktionary,已精簡格式;依 CC BY-SA 4.0 授權使用,改動後的內容同樣以此授權提供。