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负温度系数
什么是负温度系数？ 负温度系数（NegativeTemperatureCoefficient，简称NTC）在确定各种电气和电子元件的热行为中起着重要作用，例如热敏电阻、放大器和 ...
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今日热点
Interim pres steps down
Myanmar quake death toll
Trump endorses budget fix
$175M sale fraud conviction
Speaks with Mark Carney
To close DEI offices
Grizzlies fire head coach
Colorado extends contract
Panama ports deal review
Investigating insurance firm
300 student visas revoked
Pardoned by Trump
Russian scientist detained
Welcome baby girl
BitMEX founders pardoned
NY rapper pleads guilty
US to give $73M in food aid
Floods sweep South Texas
Utah bans pride flags
Raps about Oscars slap
Seen in public
Gold hits record high
Arctic sea ice shrinks
Drug rejected in Europe
Trans military ban blocked
Steps down after 39 seasons
Israel strikes Beirut
DOJ probes CA universities
Breaks Gretzky's NHL record
Utah bans fluoride
Dow drops 700+ points
Discontinues smoke alarm, lock
Ground coffee recalled
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