单词	on off element
释义	on off element un. 开关元件
随便看	compound average compound B compound-balanced pumping unit compound ball bearing compound ball mill compound bar chart compound barm compound-bar projector compound-bar resonator compound batch identification compound beam compound bearing compound bending compound bending die compound binary form compound binomial distribution compound blank compound blanking die compound blender compound body compound boiler compound bolster compound bonus compound boundary compound bow 正茧栗梢头弄诗句正莺儿啼正蕙雪初消正蝉吟败叶正见夕阳海边落正试霜夜冷正过雨正逢天下无风尘正逢浩荡江上风正钱塘江上寻门路寻问寻隙寻风寻香导导丝杆导丝杠导乘导体