Warning: file_put_contents(/www/wwwroot/ppbbbu/oiqp.com/cache/6b0c48f92bfcac01dd64adbb03005596.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/oiqp.com/index.php on line 55 alternating electromagnet例句_alternating electromagnet英汉例句_alternating electromagnet双解例句_奇葩剧汉英词典
The utility model relates to an electricity-saving device of an electromagnet, which carries out retention by alternating current. 本实用新型涉及一种以交流吸持的电磁铁之节电装置。 ip.com