| 摘要 |
In a production unit, a portal (1) is designed as a supporting structure in which at least one machine tool (11, 12) is firmly mounted on a base frame (13). This production unit is connected as a unit at the erection site to the foundation. Consequently, mutual orientation of the portal (1) and the machine tool (11, 12) at the erection site is not necessary. <IMAGE>
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