Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/1147a1e5bc36f3250b5cbd6e71977aaf.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 base period英英字典_base period剑桥英语解释_base period柯林斯英文解释_食材铺反向词典
1. N a neutral period used as a standard for comparison in constructing an index to express a variable factor: 100 is usually taken as the index number for the variable in the base period 基准期[statistics]