n.

a central cohesive source of support and stability

同義詞：anchormainstaykeystonelinchpinlynchpin

fortitude and determination

同義詞：gritgutsmoxiesandgumption

the series of vertebrae forming the axis of the skeleton and protecting the spinal cord

同義詞：spinal columnvertebral columnspinebackrachis

the part of a book's cover that encloses the inner side of the book's pages and that faces outward when the book is shelved

同義詞：spine

the part of a network that connects other networks together

"the backbone is the part of a communication network that carries the heaviest traffic"

Backbones and backdoors in satisfiability
Foldamers with Heterogeneous Backbones
An ad hoc network with mobile backbones
An ad hoc network with mobile backbones
Landmark routing in ad hoc networks with mobile backbones ☆
Chain compounds based on transition metal backbones: new life for an old topic
ChemInform Abstract: Self‐Assembly of [2]Catenanes Containing Metals in Their Backbones
The structures of the carbohydrate backbones of the lipopolysaccharides from Escherichia coli rough mutants F470 (R1 core type) and ...
Siloxane-Terminated Solubilizing Side Chains: Bringing Conjugated Polymer Backbones Closer and Boosting Hole Mobilities in Thin-Film...
Breakdown of Alexander-Orbach conjecture for percolation: Exact enumeration of random walks on percolation backbones