減速 は英語でdeceleration 英語の定義 減速 1. n. deceleration 2. v. decelerate その他の翻訳と定義 deceleration deceleration 1. n. The act or process of decelerating. The rocket is now in deceleration. 2. n. The amount by which a speed or velocity decreases (and so a scalar quantity or a vector quantity). The brakes produce a deceleration of 10 metres per second. letup letup 1. n. A pause or period of slackening. We waited for a letup in the rain, then we ran home before it started again. ウィクショナリーから辞書引用辞書
