沙石開采 的英文怎麼說
中文拼音 [shādànkāicǎi]
沙石開采
英文
sand extraction-
This experiment to adopt the method that paraffin was cut into slices studied the structural growth process on appearance and dissect of pugionium cornutum ( l ) gaertn in germination period and young sprout ; and to adapt wild flower, fruit, seed and cultivated root, stem and leaf of pugionium cornutum ( l. ) gaertn in leaf lushing period and leaf exhausting period from eerduosi city proceeded the research on appearance and anatomies. the result enunciates : the organs of pugiorium cornutum ( l. ) gaertn in root, stem and leaf have started dividing in germination period ; the transporting tissue and storing water tissue in young sprout period has been divided ; the ransporting tissue is flourishing, but the supporting tissue is unflourishing, so the root, stem and leaf of pugionium cormutum ( l ) gaertn is suitable for edibility
本試驗採用石蠟切片研究了沙芥發芽期、幼苗生長期各器官形態及解剖結構的變化過程；並對采自鄂爾多斯市野生沙芥花、果實、種子及人工栽培的葉片旺盛生長期、葉片生長衰退期的根、莖、葉等材料進行了形態及解剖學研究，結果表明：沙芥發芽期根、莖、葉各器官內組織已開始分化；幼苗期已分化出發達的輸導組織及貯水組織；葉片旺盛生長期各器官具有發達的輸導組織，但機械組織不發達，因此沙芥的根莖葉適于食用。Abstract : variations of flow pattern, flow velocity in deep poo l and side bar, mainstream thread, and water surface, caused by excavation project, are investigated by two - dimensional mathematical model in an orthogonal curvili near coordinate system. the change of bed - load transport rate, and redeposition r ate are predicted. the influences of the excavation project on navigation are ana lyzed. grid - type and flat - type excavation alternatives are proposed and discuss ed
文摘:採用正交曲線坐標系下的河道平面二維數學模型，研究了嘉陵江何家磧邊灘采砂后河道流勢、流態、灘槽流速、主流位置、水面高程及比降的變化規律，預測了采砂方案完成後卵石推移質輸沙率變化及其對航道的影響，並對格形開挖和平整開挖方案進行了比較分析There have been lots of fields of sand area resources development in china including forest construction for timber base, peat resource development and utilization, thermal tube technique application, exploration of petroleum and natural gas, and all are with certain scales
我國對沙區資源的開發利用已擴大到多個領域，沙區用材林基地建設、泥炭資源開發利用、熱管技術應用、石油天然氣開采等都初具規模。Abstract : because the shenfu - dongsheng mine area is located in intermediate of arid and semiarid zone, its ecological environment is very fragile. based on the fragileeco - environmental, the coal mining and construction have brought out some new environmental problems. man - made debris flow problems is the most serious of them which caused by coal mining, construction of railway and highway as wellas exploiting stone. through a great deal of experiments of artificial simulation setting water rushing to two types of slope debris flow and debris flow gully in shenfu - dongsheng mine site, the characteristics is favourable to formation of debris flow ; ( 2 ) the waste gangue is easy to initiate and is main solid material of debris flow in this area ; ( 3 ) the whole debris flow process could be observed through the model simulation experiment of debris flow gully. at present, this experiment method is the best way to analyze debris flow genesis and process
文摘:神府東勝礦區位於黃土高原北部乾旱半乾旱過度地帶，由於煤田的大量開采，誘發了大量的環境問題，尤以人為泥石流最為嚴重.本文以神府-東勝礦區人為泥石流為研究對象，採用人工放水沖刷模擬實驗的方法，分析了坡面型和溝谷型泥石流源地鬆散體起動、產沙、泥石流過程的特性，所得結論為: （ 1 ）放水歷時長、強度大，有利於泥石流的形成; （ 2 ）棄土石渣易起動，是該區泥石流固體物質的主體; （ 3 ）溝道型泥石流放水沖刷模擬實驗，便於觀測泥石流的全過程，坡面型泥石流放水沖刷模擬實驗，利於統計產沙、觀測侵蝕形態Because the shenfu - dongsheng mine area is located in intermediate of arid and semiarid zone, its ecological environment is very fragile. based on the fragileeco - environmental, the coal mining and construction have brought out some new environmental problems. man - made debris flow problems is the most serious of them which caused by coal mining, construction of railway and highway as wellas exploiting stone. through a great deal of experiments of artificial simulation setting water rushing to two types of slope debris flow and debris flow gully in shenfu - dongsheng mine site, the characteristics is favourable to formation of debris flow ; ( 2 ) the waste gangue is easy to initiate and is main solid material of debris flow in this area ; ( 3 ) the whole debris flow process could be observed through the model simulation experiment of debris flow gully. at present, this experiment method is the best way to analyze debris flow genesis and process
神府東勝礦區位於黃土高原北部乾旱半乾旱過度地帶，由於煤田的大量開采，誘發了大量的環境問題，尤以人為泥石流最為嚴重.本文以神府-東勝礦區人為泥石流為研究對象，採用人工放水沖刷模擬實驗的方法，分析了坡面型和溝谷型泥石流源地鬆散體起動、產沙、泥石流過程的特性，所得結論為: （ 1 ）放水歷時長、強度大，有利於泥石流的形成; （ 2 ）棄土石渣易起動，是該區泥石流固體物質的主體; （ 3 ）溝道型泥石流放水沖刷模擬實驗，便於觀測泥石流的全過程，坡面型泥石流放水沖刷模擬實驗，利於統計產沙、觀測侵蝕形態A large portion of the work involves drilling and extracting oil and gas or miningof ores, stone, sand and gravel
他們的主要工作主要是：鉆孔採油和氣體開采，或者開采礦物、石料、沙子和沙礫。分享友人