occurrences of igneous rocks [地球科學(xué)]火成巖産狀occurrences n.發(fā)生的事名詞occurence的複數(shù)形式.occurrenceregularity 發(fā)生槼律occurrencearea 發(fā)生麪積occurrence time 發(fā)生時(shí)間occurrence set [計(jì)算機(jī)科學(xué)技術(shù)]出現(xiàn)集occurrence of random events [計(jì)算機(jī)科學(xué)技術(shù)]隨機(jī)事件的發(fā)生occurrence of magmatic rock [地球科學(xué)]巖漿巖産狀occurrence of igneous rocks [地球科學(xué)]火成巖産狀occurrence (n.) occurrence n. 發(fā)生；出現(xiàn)；事件；發(fā)現(xiàn)occurrenc 發(fā)生, 出現(xiàn), 事件, 存在occurred adj.發(fā)生的動(dòng)詞occur的過去式和過去分詞.occurent adj.正在發(fā)生的occurences n.發(fā)生的事名詞occurence的複數(shù)形式.occurance 發(fā)生occur for 發(fā)生在…時(shí)候occur as 以...的形式出現(xiàn)occur (v.) occur vi.發(fā)生；存在；出現(xiàn)；想到