The plug-in's publisher should provide instructions for installation.

插件的发布者应该提供安装说明。

youdao

The Touch Developer Preview of Ubuntu will be published on the 21st February 2013 with installation instructions for the Nexus 7 and Nexus 10 tablet devices as well as smartphones such as the Nexus 4 and Galaxy Nexus.

ENGADGET: Ubuntu for tablets revealed with split screen multi-tasking, preview for Nexus slates coming this week