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## 压强

### 压强

${\displaystyle p={\frac {F}{S}}}$

• ${\displaystyle p}$代表壓強
• ${\displaystyle F}$代表垂直作用力
• ${\displaystyle S}$代表受力面積

${\displaystyle p=-\operatorname {d} \!{\mathit {F}}/\operatorname {d} \!{\mathit {S}}}$

${\displaystyle p={\frac {F}{S}}={\frac {G}{S}}={\frac {mg}{S}}={\frac {\rho Vg}{S}}=\rho gh}$

${\displaystyle p=\rho gh}$

• ${\displaystyle p}$表示壓強
• ${\displaystyle \rho }$表示液体密度
• ${\displaystyle g}$表示重力加速度
• ${\displaystyle h}$表示物体表面离液体上方的距离

## 单位

帕斯卡（Pa） （bar） 工程大气压（at） 标准大气压（atm） （Torr） 磅力每平方英寸（psi）
1 Pa ≡ 1 牛顿/平方米 = 10−5 bar ≈ 10.197×10−6 at ≈ 9.8692×10−6 atm ≈ 7.5006×10−3 Torr ≈ 145.04×10−6 psi
1 bar = 100,000 Pa ≡ 106 达因/平方厘米 ≈ 1.0197 at ≈ 0.98692 atm ≈ 750.06 Torr ≈ 14.504 psi
1 at = 98,066.5 Pa = 0.980665 bar ≡ 1 千克力/平方厘米 ≈ 0.96784 atm ≈ 735.56 Torr ≈ 14.223 psi
1 atm = 101,325 Pa = 1.01325 bar ≈ 1.0332 at ≡ 101 325 = 760 Torr ≈ 14.696 psi
1 Torr ≈ 133.322 Pa ≈ 1.3332×10−3 bar ≈ 1.3595×10−3 at ≈ 1.3158×10−3 atm ≡ 1 毫米汞柱 ≈ 19.337×10−3 psi
1 psi ≈ 6,894.76 Pa ≈ 68.948×10−3 bar ≈ 70.307×10−3 at ≈ 68.046×10−3 atm ≈ 51.715 Torr ≡ 1 /平方英寸

## 压强与能量密度

This article uses material from the Wikipedia article "压强", which is released under the Creative Commons Attribution-Share-Alike License 3.0. There is a list of all authors in Wikipedia

### Mechanical Engineering

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