- 1赫茲（頻率單位；符號 Hz）
A hertz is a unit for how often something repeats in one second. One hertz means once per second. We use it for sound , radio , and anything that in a steady beat. A sound of 440 hertz is the musical A that many orchestras tune to. The short written form is Hz. It is a science-and-tech word: you meet it in physics class, on radios, and on computer specs. Though actually, in everyday English it sounds exactly like hurts, which is a completely different word. You will also see kHz and MHz — thousands and millions of hertz — because one hertz is a very small step once you leave slow behind.
組成Named after the German physicist Heinrich Rudolf Hertz (1857–1894). English borrowed the German surname Hertz and turned it into a unit.
原始詞典資料3 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。
Hertzname
- 1
A surname from German.
hertznoun/hɜːts/
- 1
In the International System of Units, the derived unit of frequency; one (period or cycle of any periodic event) per second.
- Each turbogenerator consisted of a steam turbine, powered by 900 psi of superheated steam, that was coupled by a set of reduction gears to a General Electric marine alternating-current generator operating at 1,800 rpm. Each generator had a capacity of 2,000 kilowatts of three-phase power at 450 volts and 60 hertz. The main 450-volt switchboard was energized by the two turbogenerators. The emergency switchboard, in the emergency generator room, was fed from the main switchboard through an electrical tie.
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。