An (ion engine proficiency) can be approximative.Logical formLearned from14 sentences. Ion may undergo concentration.Logical formLearned from14 sentences. Ions can be incoming.Logical formLearned from14 sentences. Ions can be hydrated.Logical formLearned from14 sentences. Ions may be generated.Logical formLearned from14 sentences. (Hydrogen ion concentration) may increase.Logical formLearned from13 sentences. Ions can be heavy.Logical formLearned from13 sentences. A charge can be on an ion.Logical formLearned from13 sentences. Variety can be constituted-of-or-filled-with ions.Logical formLearned from13 sentences. (Ion transport) may undergo a regulation.Logical formLearned from13 sentences. A cloud can be constituted-of-or-filled-with ions.Logical formLearned from13 sentences. (Potassium ions) can be charged.Logical formLearned from13 sentences. Ions may undergo a transfer.Logical formLearned from13 sentences. Ions may undergo an adsorption.Logical formLearned from13 sentences. Ions may undergo a generation.Logical formLearned from13 sentences.