It does not produce any visible output and is used only as a container for other controls on the web page 它不生成任何可见输出，只用作网页上其他控件的容器。
2.
Control does not produce any visible output and is only used as a container for other controls on the web page 控件不产生任何可见的输出，仅用作网页上其他控件的容器。
3.
Control does not produce any visible output and is used only as a container for other controls on the web page 控件不产生任何可见输出并且只能用作网页上其他控件的容器。
4.
To date the forum ' s most visible output has been functional specifications for product interoperability and a multi - vendor bqm service demonstration 迄今，论坛最明显的结果是制定了产品互操作性的功能规范以及一个多厂商的bqm服务演示。
