- 知识拓展
503是一种HTTP状态码。英文名为503 Service Unavailable，与404（404 Not Found）同属一种网页状态出错码。
- 相关词组
- velocity error compensator速度误差补偿器
- error message错误[标志]信息，错误报文;
- error condition误差条件;
- fundamental attribution error基本归因误差;
- by trial and error通过尝试和错误
- admit one's error and ask for punishment请罪
- copy error复制错误，仿形误差;
- velocity error速度误差
- tank attitude error油箱姿态误差
- ultimate error of sampling抽样最大误差
- absolute error绝对误差;
- titration error滴定误差
- weighing error称量误差
- allowable error容许误差;
- http status 404http状态404
- human error人为误差;
- average error平均差，平均误差;
- by erroradv.错误地;
- expression error[计] 表达式错;
- time-weighted absolute error时间加权绝对误差
