A thermal efficiency may be stated.Logical formLearned from2 sentences. Thermal efficiency may undergo a definition.Logical formLearned from2 sentences. A thermal efficiency can be a (performance measure) of a device.Logical formLearned from2 sentences. (Fish die-offs) may be associated with thermal gradients.Logical formLearned from2 sentences. A waterfall can be thermal.Logical formLearned from2 sentences. Thermal noise can be white.Logical formLearned from2 sentences. A thermal neutron may undergo an absorption.Logical formLearned from2 sentences. An (energy method) can be thermal.Logical formLearned from2 sentences. Thermal expansion of a fuel may provide negative feedback.Logical formLearned from2 sentences. An extension can be thermal.Logical formLearned from2 sentences. An improvement can be in thermal efficiency.Logical formLearned from2 sentences. Experiments can be on thermal diffusion.Logical formLearned from2 sentences. A singing/stating can be thermal.Logical formLearned from2 sentences. Thermal motions can be microscopic.Logical formLearned from2 sentences. (Swimming pools) may be produced by a thermal system.Logical formLearned from2 sentences.