Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/26c1ae129d767270284281ede6dba54f.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 quartz crystal英英字典_quartz crystal剑桥英语解释_quartz crystal柯林斯英文解释_贰靶汉英词典
1. N a thin plate or rod cut in certain directions from a piece of piezoelectric quartz and accurately ground so that it vibrates at a particular frequency 石英晶体