1. A mechanical or structural component consisting of the lower part of a machine, device, or structure assembled together as a unit
The bottom assembly of the washing machine needs to be replaced.
O conjunto inferior da máquina de lavar precisa ser substituído.
2. In manufacturing, the lower section of a product or equipment that is pre-assembled before final assembly
Quality control inspected the bottom assembly before shipment.
O controle de qualidade inspecionou o conjunto inferior antes do envio.