During a change of state from a solid to a liquid, the liquid and the solid states of the substance coexist and the temperature does not change. This particular temperature is called the melting point of the substance. The melting point of a substance depends on the pressure acted on the object.

【理】熔点。固态的物质吸热熔化成液态，这期间物质的固态和液态共存，而温度不会改变。这个特定的温度就是物质的熔点。物体的熔点也和它所受的压力有关。