国产尤物av尤物在线观看,しぼっちうぞ2在线观看1一

TranslationMobile

"closing" in Chinese : n. 1.封閉，停閉；封閉口；【植物；植物學(xué)】郁閉。 2 ...
"levee" in Chinese : n. 1.〔美國〕(河中泥沙形成的)沖積堤。 2.天然堤 ...
"levee" in Chinese : levee1 n. 1.(國王等起床后的)接見。 2.〔英國〕( ...
"are closing in on" in Chinese : 正越來越近
"closing" in Chinese : n. 1.封閉，停閉；封閉口；【植物；植物學(xué)】郁閉。 2.終結(jié)，結(jié)尾；完工。 ...
"closing in" in Chinese : 故意沖撞; 空心鑄件或管件的收口
"in closing" in Chinese : 最后
"not closing" in Chinese : 凸嘴，不緊貼
"artificial levee" in Chinese : 防洪堤
"back levee" in Chinese : 背水堤; 逆流堤; 支堤
"back of levee" in Chinese : 堤背; 堤防背水面
"backwater levee" in Chinese : 雍水堤
"bank levee" in Chinese : 岸堤
"banquette of levee" in Chinese : 填出堤
"base of levee" in Chinese : 堤底

In chapter 1 , the principle and engineering measures of bringing under control are analyzed at first , the problem of water environment arisen in harnessing closed levees are discussed , too . then present conditions of simulation research on solute movement in groundwater are summarized . in addition , the importance and contents of simulation research on solute movement in groundwater are set forth
論文第一章緒論部分首先分析了圩區(qū)治理的原則與工程措施，其次討論了圩區(qū)治理中出現(xiàn)的水環(huán)境問題，后在此基礎(chǔ)上對國內(nèi)外地下水溶質(zhì)運移模擬研究現(xiàn)狀進行了概括，并闡述了地下水溶質(zhì)運移模擬研究的重要意義與內(nèi)容，最后論述了本研究課題的提出。