液體在靜止狀態下受力產生的壓力稱為液體靜壓力。作用在靜止液體上的力有兩種:質量力
 和表面力。前者作用在液體的所有質點上,如重力;后者作用在液體的表面上,如切向力和法向
 力。表面力可能是容器作用在液體上的外力,也可能是來自另一部分液體的內力。
 如果在液體內部某點微小面積△A上作用有法向力△F,則△F/△A的極限定義為該點的靜壓
 力,用p表示,即:
若在液體的面積A上受均勻分布的作用力F,則靜壓力可表示為:
 
在液壓傳動中所用的壓力一般都是指液體的靜壓力。液體的靜壓力是由液體的自重和液體表

面受到的外力產生的。由于靜止液體受壓不受拉,受拉液體要流動,所以忽略切向力。則靜止液
 
體在單位面積上所受的法向力稱為靜壓力,簡稱為壓力。液體靜壓力在物理學上稱為壓強,在工

程應用中習慣稱為壓力。


 
 
 
 The pressure produced by the force exerted by a liquid in quiescent state is called liquid static pressure. There are two forces acting on stationary liquids: mass force.

And surface forces. The former acts on all the particles of a liquid, such as gravity; the latter acts on the surface of the liquid, such as tangential force and normal force.

Power. The surface force may be the external force of the container acting on the liquid, or the internal force from the other part of the liquid.

If there is a normal force Delta F acting on a tiny area Delta A in the liquid, the limit of delta F / delta A is defined as the static pressure at that point.

The force is expressed in P, that is:

If the force F is evenly distributed on the area A of the liquid, the static pressure can be expressed as:

The pressure used in hydraulic transmission generally refers to the static pressure of the liquid. The static pressure of a liquid is determined by the gravity and liquid surface of the liquid.

The external force produced by the surface. Because the static liquid is not pulled under tension and the liquid is flowing, the tangential force is ignored. Still liquid

The normal force acting on a unit area is called static pressure, or referred to as pressure. Liquid static pressure is called pressure in physics.

Application is called pressure.