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Fused Filament Fabrication Method is the most common 3D printing technology, involving the melting and extrusion of thermoplastic filaments layer-by-layer [29].

In the study of microbial fermentation (such as the production of Daqu for traditional spirits), "FFFM" often refers to the [18, 19].

: This community of microbes is specifically responsible for product synthesis and metabolic functions, such as substrate utilization [18, 19].

: It is widely used for creating complex structures and is generally considered easy to operate compared to other bioprinting methods [29].

Depending on your area of interest, "FFFM" can refer to a specific type of 3D printing or a category of biological fermentation. 1. Fused Filament Fabrication Method (FFFM)

: It is highly compatible with a variety of biomaterials [29].

: The high manufacturing temperatures can limit its use for certain sensitive biological cells [29]. 2. Fermentation Functional Microbiota (FFM/FFFM)