单词	低丘陵
释义	同泛滥平原--低丘陵--
随便看	upper cut off frequency upper cut-off frequency uppercuts uppercutting upper cyclone upper darby upper datum mark upper dead center upper dead center，udc upper decision line upper decision line (udl) upper deck upperdeck upper deck door upper deck tonnage upper deck 上层 upper density upper derivative upper deviation upper devonian upper dharwar system upper diagonal-diagonal- lower diagonal upper diagonal-diagonal- lower diagonal{=udl} upper die upper difference threshold