Some Cu - Al structures used in thermal exchangers may lead to galvanic corrosion.铜铝结构热交换器存在着电偶腐蚀的倾向.The actue toxic effect of heavy metal Cu ~ ( 2 + ) to Stentor Polymorphrus ( Ciliophora, Heterotrichida ) was studied.研...
The circuit structure is using a fly-back converter voltage.这个转换器是利用返驰式电路架构实现。Two phase - shift - networks of frequency discriminator are given circuit and layout examples.本文较详细地分析了鉴频器用移相网络的特性和集成化难易点.Circuit - oriented m...