Note that SRS names and IDs are arbitrary and local to each database, but the underlying coordinate systems are often predefined, with reference to industry authorities.
注意，SRS名称和ID是任意的，而且是每个数据库本地的，但是底层的坐标系常常是根据行业特权而预定义的。
If instead we wanted to register an arbitrary subroutine (defined using sub method_name{ ... }), we would have to register a reference to this subroutine like so: -command=>\&method_name.
如果不采用这种方法的话，我们要想注册一个子例程（用 sub method_name{ ... }来定义），那么必须注册一个到这个子例程的引用，类似于： -command=>\&method_name 。
When logical overwrite is performed a number of times, arbitrary data achieved before logical overwrite are reproduced by sequential reference to the old physical address of the correlation table.
在进行了多次逻辑覆写的情况下，依次参照上述对应关系列表的旧物理地址来重放进行逻辑覆写前的任意数据。
When logical overwrite is performed a number of times, arbitrary data achieved before logical overwrite are reproduced by sequential reference to the old physical address of the correlation table.
在进行了多次逻辑覆写的情况下，依次参照上述对应关系列表的旧物理地址来重放进行逻辑覆写前的任意数据。
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