underdevelopment county [經(jīng)濟學]欠發(fā)達縣underdevelopment n.發(fā)展不充分；不發(fā)達；發(fā)育不良；[攝]顯影不足underdeveloped reservoir [能源科學技術(shù)]未充分開發(fā)的油藏underdeveloped region 不發(fā)達區(qū)域underdeveloped port [交通運輸工程]不發(fā)達港口underdeveloped country area [法學]經(jīng)濟欠發(fā)達區(qū)域underdeveloped country 不發(fā)達國家，發(fā)展中國家（等于developing country）underdeveloped counties [經(jīng)濟學]欠發(fā)達縣域underdeveloped (adj.) underdeveloped adj.未充分發(fā)育或發(fā)展的v.（使）發(fā)展不完全，（使）顯影不足( underdevelop的過去式和過去分詞)underdevelop vt. 使發(fā)展不完全；使顯影不足 vi. 顯影不足；發(fā)展不完全underdetermined system 欠定組underdetermined adj. [數(shù)] 欠定的 v. 證據(jù)不足地說明（undertermine的過去式和過去分詞）underdeterminant n.子行列式underdense 欠密的underdeck tonnage [交通運輸工程]甲板下噸位underdeck cargo [交通運輸工程]艙內(nèi)貨艙貨甲板下貨物underdamped adj.欠阻尼的underdamp vt.弱阻尼(欠阻尼；阻尼不足；不充分減震)undercutting n.消弱；削價；凹割；掏槽；截槽動詞undercut的現(xiàn)在分詞.