Example sentences of "is [adj] for [adv] a " in BNC.
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1 | Each such coherent structure is identifiable for only a limited time . |
2 | Statistically the chemical industry is responsible for just a fraction of dioxin ‘ production ’ from combustion with domestic fires accounting for a much larger chunk . |
3 | Chief Superintendent Meadows added : ’ Excessive speed is responsible for around a third of all vehicle occupancy deaths . |
4 | At high stepping rates each phase is excited for only a short time interval and the build.up time of the phase current is a significant proportion of the excitation interval . |
5 | This situation only arises when the motor is stationary ; if the motor is moving the phases are excited in sequence and any one winding is excited for only a fraction of the cycle . |