extreme arid 中文意思是什麼
extreme arid
解釋
極乾旱-
But because of its extreme arid torrid climate, hypsography low - lying, gale and frequent wind and other unique physica1 geography characteristics, its nature ecological environment are extremely bad and frail
因為氣候極度乾旱炎熱、地勢低洼、風大風頻等自然地理特徵，其自然、生態環境十分惡劣和脆弱。 -
Firstly, the status of our nation ' s water resources, flood and arid hazards is overviewed to illustrate the necessity for study on dynamic control of flood season limited water level. disadvantages in traditional limitsd water level design, static control of limited water level design, static control of limited water level and fuzzy limited water level curve are pointed out, and mending methods for these are introduced. dynamic control and its key problems are analyzed hi next section. the allowable range of limited water level is determined, so as the allowable extreme risk index. the definition of extreme risk is re - illustrated, risk analysis methods in reservoir operation is discussed either. according to the definition of extreme risk rate, the allowable extreme risk rate of reservoir is systematically demonstrated with variant extreme risk indexes and flood season limited water level
本文首先闡述了我國水資源狀況和水旱災害、說明水庫汛期限制水位動態控制研究的必要性；介紹了傳統汛限水位設計、汛限水位靜態控制、模糊汛限水位過程線存在的問題及其初步改進方法；分析汛期限制水位動態控制的方法及關鍵問題；進一步闡述了水庫極限風險率的定義；根據極限風險率定義，詳細敘述了不同極限風險指標時、不同汛期限制水位下起調，水庫所能承受的極限風險率計算方法。然後，基於極限風險率計算方法，以白石水庫為背景，研究「考慮壩體自身安全、考慮壩體安全與下游防護對象控制下泄流量的汛限水位動態控制的極限風險率」 。 -
During the uruguay round, special pref - erential to developing country was provided in detail by general agree - ment on trade in services due to high sensitivity arid extreme unbalance of trade in service
而在烏拉圭回合談判中，由於服務貿易的高度敏感和極端不平衡，在此領域所達成的《服務貿易總協定》 （即gats ）對發展中國家的特別優惠待遇規定最為詳細。 -
Leaf water potential of populus euphratica and influencinge factors in extreme arid region
極端乾旱區胡楊水勢及影響因子研究
分享友人