Warning: file_put_contents(/www/wwwroot/ppbbu/3350.cn/cache/f3fcfb1456fe2b55aad3bd4308b200d3.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/3350.cn/index.php on line 58 electromagnetic field英英字典_electromagnetic field剑桥英语解释_electromagnetic field柯林斯英文解释_萬杯潔海词词典
1. N a field of force associated with a moving electric charge equivalent to an electric field and a magnetic field at right angles to each other and to the direction of propagation 電磁場