Buoyant force is equal to the weight of liquid displaced. It acts vertically upward.
浮力等于排开液体的体积，方向垂直向上。
Under the instruction of constructivism, the knowledge of buoyant force is analyzed systemically as a special topic.
本文在建构主义理论的指导下，对初中物理浮力相关知识进行了专题研究；
The upward buoyant force on an object partially or wholly submerged in a fluid is equal to the weight of the displaced fluid.
部分浸没或全部浸没在流体中的物体所受到的向上浮力，等于它所排开流体的重量。
Buoyant force is not only the base of hydrostatics which has many applications, but also the key point of physics teaching in the middle school.
“浮力”是流体静力学中应用性较强的基础知识之一，也是初中物理教学的重要内容。
The maxim setting depth of tubing is related to its strength, density, inner and outer pressure difference as well as wellbore fluid's buoyant force to tubing string.
油管的最大下入深度与油管本身的强度、密度、油管内外压差、井中流体对油管柱浮力有关。
However if a permanent magnet is put near the bottom of cup it will produce a heterogeneous magnetic field and act on the aluminum ball to produce a magnetic buoyant force.
但当下方永久磁铁靠近杯底时，在磁液中产生非均匀磁场，对铝球作用一磁性浮力。
However if a permanent magnet is put near the bottom of cup it will produce a heterogeneous magnetic field and act on the aluminum ball to produce a magnetic buoyant force.
但当下方永久磁铁靠近杯底时，在磁液中产生非均匀磁场，对铝球作用一磁性浮力。
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