U 4 triode connected: Medium MU small mass filamentary heating structure.三极管接法): 中Mu小型灯丝结构.Low MU Thoriated Tungsten filamentary heating structure.低Mu敷钍灯丝结构.High MU Thoriated Tungsten filamentary heating structure.高Mu敷钍灯...
She always keeps some titbit to give to her cat.她总留点儿特别好吃的东西喂猫.Give to those that need.救济贫困者.Those who are lucky enough to be wealthy have a duty to give to the hungry.有幸成了富人的人有义务捐助忍饥挨饿的人。...