blue sky

n.the sky as viewed during daylight

同义词：blueblue airwild blue yonder

adj.without immediate commercial value

同义词：blue-sky

Transition between tonic spiking and bursting in a neuron model via the blue-sky catastrophe.
Blue sky catastrophes in reversible and Hamiltonian systems
The impact of investor protection law on corporate policy and performance: Evidence from the blue sky laws ☆
Inconsistencies in air quality metrics: 'Blue Sky' days and PM10 concentrations in Beijing
From Blue Sky Research to Problem Solving: A Philosophy of Science Theory of New Knowledge Production
The dorsal eye of the dragonfly Sympetrum : specializations for prey detection against the blue sky
Grounding blue-sky research: how can ethnography help?
Origin of the Blue Sky Laws
A chaotic blue sky catastrophe in forced relaxation oscillations
Blue-sky catastrophe in singularly perturbed systems