Rcd
abbr. 剩余电流装置（residual current device）；路由控制数字（Route Control Digit）；接收机载波检测器（Receiver Carrier Detector）
🗣️ 情景例句
Come in, Michelle,
请进 ，Michelle
Light troubles speak; great troubles are silent.
小困难，大声叫嚷；大困难，闷生不响。
Modern industry is based on the conception of the maximum production at lowest cost,
以最低成本获取最多产品，