self-recording gold-leaf electroscope的意思|示意

自记式金箔验电器 self-reaction force 自反（作用）力 self-recording gold-leaf electroscope 自记式金箔验电器 self-regulating arc welding transformer 自（动）调节弧焊变压器 ..

自动记录式金箔验电器 自动记录式金箔验电器：self-recording gold-leaf electroscope 自动记录式分光光度计：automatic recording spectrophotometer ..