closed qi 中文意思是什麼
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Near the studied area, the fossil microtine show a sequence from the early pleistocene to the mid - late pleistocene : allophaiomys ( qi ) ? redromys ( q ) ? icrotus ( q2 - i ) - on their molars, the 5th dentine isthmus is5 show a closed trend from broad to narrow and made the salient angle tend to gradual increase. in the area, the 6th dentine isthmus is6 of the microtus show a trend from broad to narrow gradually
在研究區及其附近,更新世以來,田鼠類的演替順序為: allophaiomys ? ? predromys ? ? microtus ,其第5齒峽is5相應的由寬變窄,趨于封閉,使封閉的褶角趨于增多;研究區內microtusoeconomus的第6齒峽is6有逐步變小的趨勢。
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