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他目前面临的困难是,要找到一种物质,同时是很好的电导体又是热的不良导体。
The challenge lies in finding a substance that conducts electricity well and heat badly.
youdao
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他目前面临的困难是,要找到一种物质,同时是很好的电导体又是热的不良导体。
The challenge lies in finding a substance that conducts electricity well and heat badly.
youdao