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Sentence analysis
6Spans
Sentence
Span Details
ウラン238
uranium-238; U-238-> ウラン238noun
は
topic markergrammar
自発核分裂
spontaneous fissionnoun
を
object markergrammar
起こす
raise; lift up; set upright; wake (someone) up; awaken; cause; bring about; trigger; generate; start; launch; found; establish; plow; till (soil); fall ill with; come down with; transcribe; write down (spoken words); turn over (a card)godan verb
ことがある。
have done (something); something has occurred; sometimes; there are times when-> 事があるexpression, verb