But manufacturers continue to use copper because it's a better conductor of heat.
2
这是最难的,最起码可压缩及最佳热导体之间的所有已知材料。
It is the hardest, the least compressible and the best thermal conductor among all known materials.
3
电导体一般是用金属制成的。热导体能使热能流动,因为它无法吸收辐射热;这类物质包括了金属和玻璃。
Electrical conductors are usually metallic. Thermal conductors allow thermal energy to flow because they do not absorb radiant heat; they include materials such as metal and glass.