塔式起重机的塔身【塔机片式标准节】是重要部件。

The tower body of the tower crane tower crane standard section [type] is an important part of.

youdao

塔式起重机的塔身【塔机片式标准节】是重要部件。

The tower body of the tower crane tower crane standard section [type] is an important part of.

youdao