SI unit n (Units) any of the units adopted for international use under the Système International d'Unités, now employed for all scientific and most technical purposes. There are seven fundamental units: the metre, kilogram, second, ampere, kelvin, candela, and mole; and two supplementary unit...
Measurement in Metrics AC Science. Metric System Systems Internationale Systems Internationale AKA “SI” AKA “SI” Based on factors of 10 Based on factors. DENSITY. The amount of mass per unit of volume Items with low density: feathers, marshmallows, pillows, etc. Items with high density: ro...
SI units are used for - Rock Creek Schools搜索 阅读原文 下载APP
1) Prefixes 前缀 aero-: 空气,大气;气体;飞机;航空 aerobiology (空气生物学,高空生物学); aeronautics (航空学,飞行学); aeromechanics (航空力学) astro-: 星,天体;宇宙 astrodynamics (天体动力学); astrogeology (天体地质学); astronomy (天文学) anti-: 反,抗,阻;治,止;防止,中和 antibody (抗体);...