Page 17 - 密度測量 Density Measurement
P. 17
密度定義
• 密度 ρ :每單位體積 (V)中質量 (m)的比值 — the ratio of
the amount of matter in an object compared to its volume
(DIN 1306):
The term „Mass density“ is also true, because it’s about mass
units per volume units. (Mass密度=密度,同樣都是質量/體
積比值)
• 密度會受介質溫度及壓力影響,因此參考密度定義為在參
考條件下其密度值:
參考條件: 273,15K(0 °C) , 101325 Pa(1 atm) (DIN 1343).