The photos showed that, instead of using a single alloy of some low-melting-pointmetal, the element consisted of three types of metal.
照片显示保险丝由三种金属组成，而不是使用某种低熔点金属的单一合金。
2
A part surface can be infiltrated with a lowmeltingpointmetal to increase density, strength, hardness, ductility and impact resistance.
零件表面能被低熔点金属渗透以增大密度、强度、硬度、延展性和抗冲击能力。
3
A halogen element, f, is major raw materials deriving fluorine compound, and because of lowmeltingpoint, that is widely used in steelmaking, nonferrous metal smelting, cement, glass and ceramics.