此前的标签和属性可以是大写、小写，或者任意大小写字母的组合，而有效的XHTML 1.0文档则要求所有标签和属性必须一律小写。
Whereas previously tags and attributes could be written in uppercase, lowercase, or any combination thereof, a valid XHTML 1.0 document required all tags and attributes to be lowercase.
该控制律简单有效，无需求解系统方程即可分析和判断近程导引的稳定性进而施加控制。
This method was simple and effective. The control could be actuated by analysis and judge the stability in short distance guidance without solving the system state equations.
市场机制能有效调节的经济活动，一律取消审批。
The government should withdraw from business activities that can be regulated and modulated by market rules.
应用推荐