sentences: losing gases cycle the electrical free of an preposition to be unbalanced
docs: unleaded_gasoline is gasoline. compressed_gas is gas. desorption is off_gas. helium_gas is unreactive_colourless_and_odourless. gas_flow is single_phase_flow. terminating_cycle is cycle. unidirectional_valve is valve. unexchangeability is changelessness. unidirectional_valve is directed_route.