不，你可以取消发布，但一旦你的申请已生活在市场上你不能删除。 （每包名称是独一无二的，谷歌记住所有包名反正的这样你就可以使用此提醒的）

No, you can unpublish but once your application has been live on the market you cannot delete it. (Each package name is unique and Google remembers all package names anyway so you could use this a reminder)

删除按钮仅适用于您的应用程序的未发表的版本。一旦您发布您的应用程序或它的特定版本，则无法从市场中删除。但是，你仍然可以取消发布吧。 删除按钮才可派上用场，当你上传一个新的版本，那么你意识到你疯玩，并希望其发布之前删除新的版本。

The "Delete" button only works for unpublished version of your app. Once you published your app or a particular version of it, you cannot delete it from the Market. However, you can still "unpublish" it. The "Delete" button is only handy when you uploaded a new version, then you realized you goofed and want to remove that new version before publishing it.

A参考

更新，你现在可以过滤出未公布或汇票的应用程序，从您的列表。

Update, you can now filter out unpublished or draft apps from your listing.

取消发布选项可在标题区中，发表文字的旁边。

Unpublish option can be found in the header area, beside PUBLISHED text.