常用物理量的单位和量纲
Wikipedia: Physical quantity. [Available online at https://en.wikipedia.org/wiki/Physical_quantity.]
Wikipedia: International System of Units. [Available online at https://en.wikipedia.org/wiki/International_System_of_Units.]
Wikipedia: SI base unit. [Available online at https://en.wikipedia.org/wiki/SI_base_unit.]
Wikipedia: SI derived unit. [Available online at https://en.wikipedia.org/wiki/SI_derived_unit.]
Wikipedia: Dimensional analysis. [Available online at https://en.wikipedia.org/wiki/Dimensional_analysis.]
Wikipedia: Table_of_thermodynamic_equations. [Available online at https://en.wikipedia.org/wiki/Table_of_thermodynamic_equations.]
Wikipedia: List of thermodynamic properties. [Available online at https://en.wikipedia.org/wiki/List_of_thermodynamic_properties.]
(表格完善中......）
| Symbol | Quantity |
物理量 |
绝对单位制 |
重力单位制 |
||
|
SI单位 |
量纲式 |
工程单位 |
量纲式 |
|||
| length |
长度 |
m |
L |
m |
L |
|
| mass |
质量 |
kg |
M |
Kgf·s2·m-1 |
L-1FT2 |
|
| force |
力 |
Kg·m·s−2=N |
MLT−2 |
kgf |
F |
|
| time |
时间 |
s |
T |
s |
T |
|
| I | electric current | A | I | |||
| velocity |
速度 |
m·s−1 |
LT−1 |
m·s-1 |
LT-1 |
|
| acceleration |
加速度 |
m·s−2 |
LT−2 |
m·s-2 |
LT-2 |
|
| pressure |
压力 |
N·m−2=Pa |
ML−1T−2 |
kgf·m-2 |
L-2F |
|
| density, mass density |
密度 |
kg·m−3 |
L−3M |
kgf·s2·m-4 |
L-4FT2 |
|
| dynamic viscosity |
粘度 |
N·s·m−2 = Pa·s |
L−1MT−1 |
kgf·s·m-2 |
L-2FT |
|
| thermodynamic temperature |
温度 |
K |
θ |
℃ |
θ |
|
| amount of substance | mol | N | ||||
| luminous intensity | cd | J | ||||
| frequency | T−1 | |||||
| energy, work |
能量或功 |
N·m=J |
L2MT-2 |
kgf·m |
LF |
|
| heat |
热量 |
J |
L2MT-2 |
kcal |
LF |
|
| specific heat capacity, specific entropy |
比热容 |
J·kg-1·K-1 |
L2T-2θ-1 |
kcal·kgf-1·0C-110 |
Lθ-1 |
|
| power, radiant flux |
功率 |
J·s-1=W |
L2MT-3 |
kgf·m·s-1 |
LFT-1 |
|
| Thermal conductivity |
热导率 |
W·m-1K-1 |
LMT-3θ-1 |
kcal·m-1·s-1·0C-1 |
FT-1θ-1 |
|
| Heat transfer coefficient |
传热系数 |
W·m-2·K-1 |
MT-3θ-1 |
kcal·m-2·s-1·0C-1 |
FL-1T-1θ-1 |
|
| kinematic viscosity, thermal diffusivity, diffusion coefficient |
扩散系数 |
m2·s-1 |
L2T-1 |
m2·s-1 |
L2T-1 |
|