可以在工作区的.metadata目录下找到项目：

The projects can be found under the .metadata directory of your workspace:

[eclipse-workspace]/.metadata/.plugins/org.eclipse.core.resources/.projects

每个项目都包含一个 .location 文件（二进制格式），该文件大概告诉eclipse项目在文件系统上的位置（如果已导入）。

Each project contains a .location file (in binary format) which presumably tells eclipse where the project is located on the filesystem, if it has been imported.