To produce highly pure POF with low losses is an international issue.
制得低损耗、高纯度的塑料光纤是目前国内外共同的目标。
HVDC technology is used to transport electrical power over long distances with low losses using underground or submarine cables.
HVDC技术利用地下或者海底电缆,用于远距离的电力传输,而损耗较低。
It has characteristics of large current, high power, high voltage, high switch frequency, proven reliability, low losses and so on.
它具有大电流、高电压、开关频率高、高可靠性、结构紧凑、低损耗的特点。
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