工业用热电阻，铂热电阻和铜热电阻两大类。
The thermal resistance of industrial, platinum thermal resistance and thermal resistance of two kinds of.
铜、铁矿石等工业用金属的供应链由地区性变为全球性，由分散变成统一。
The supply chain for industrial metals, from copper to iron ore, has gone from being regional and fragmented to global and unified.
用真空保护气氛熔炼不同锂加入量的铜锂合金，得到系列表面光滑、内部致密的铜锭，并研究了锂对工业纯铜凝固特性的影响。
A series of Cu Li alloys with different contents of lithium have been obtained by means of vacuum induction furnace at Ar atmosphere .
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