n.
a set of four similar things considered as a unit
同义词：quartetquartettequadruplet
a quantity that is four times as great as another
Quadruples
Unemployment Quadruples Among German Doctors
A covering of triples by quadruples
On the covering of pairs by quadruples I
Coupled‐cluster method truncated at quadruples
Skeletal Quads: Human Action Recognition Using Joint Quadruples
Problems of linear algebra and classification of quadruples of subspaces in a finite-dimensional vector space.
Coupled-cluster connected quadruples and quintuples corrections to the harmonic vibrational frequencies and equilibrium bond distanc...
Extension of the method of moments of coupled-cluster equations to excited states: The triples and quadruples corrections to the equ...
Diffusion coefficients of zirconocene–borate ion pairs studied by pulsed field-gradient NMR—evidence for ion quadruples in benzene...
