Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/3e23de9e115b55622cfa46b653a4864c.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 proportional band potentiometer是什么意思，proportional band potentiometer的翻译，proportional band potentiometer音标、读音、用法和例句_按摩法牛津词典