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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... A spheromak is simply connected. The toroidal (donut-shaped) flux, represented by the blue arrow in... [+] the figure, exists at the center but not at the walls of the spheromak. Magnetic fields are primarily generated by internal plasma currents. Steady-state equilibrium is maintained with a single external coil set. ... "