The melting point of copper is not so high as that of iron. 铜的熔点不如铁高。
Perhaps the outer part of the moon was heated to the melting point by intense meteoric bombardment. 也许月球外层曾被流星体猛烈的撞击而加热到熔点。
The low melting point of polyethylene allows for closure of pores and reduction of flow through them at elevated temperatures. 此聚合物的低融点性可以在更高的温度下关闭毛孔并减少流量。