xlarge

1

You should also decide whether your application is only for tablet-type devices ( specifically , xlarge devices ) or for all types of screen sizes .

你需要决定你的应用程序是只为平板类型的设备（典型的是超大（xlarge）设备）开发还是为所有种类的屏幕大小开发。
2

You can specify landscape resources with the land resource qualifier , but if you want alternative resources for an extra large landscape screen , you should use both xlarge and land qualifiers .

你可以使用land资源，但是如果你想为超大的横屏选择资源的话，你应该同时使用xlarge和land。