tachometer
🇺🇸
/tæˈkɑːmɪtər/
🇬🇧
/tæˈkɒmɪtə(r)/
noun
R
A tool that measures how fast something spins, like the speed of a car engine.
The mechanic checked the tachometer to ensure the engine was running at the correct speed.
機械師檢查了轉速表，以確保發動機以正確的速度運行。
translation
轉速計
詞形變化
Plural
tachometers