Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/e0dae7ca48ed0edddb3362156ee3be01.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 spring balance英英字典_spring balance剑桥英语解释_spring balance柯林斯英文解释_94生活常识网有道词典
1. N a device in which an object to be weighed is attached to the end of a helical spring, the extension of which indicates the weight of the object on a calibrated scale 弹簧秤