river classification 中文意思是什麼

river classification 解釋
河流分類
  • river : n 1 河，江。 Rriver Thames 或 the R Thames 泰晤士河； the Hudson R 〈美國〉哈得孫河。 the Rriver ...
  • classification : n 1 選別；分等，分級；分選。2 【動、植】分類（法）。 〈分類級別為： phylum 【動物；動物學】及 div...
  1. The modified zndx in comparison with others is well indicative of the severity and extent of flood / drought event and of more objective classification of them, which is therefore quite applicable to a extended area. ( 3 ) the main anomaly structures of grades of drought / food in summer over northwest china present pluvial pattern and dry pattern in all the areas, and spatial changes are opposite pattern from the noth to the south and the west to the east. the first four rotated loading vector fields represent four principal precipitation anomaly areas : the weishui river basin, east of the qinghai - xizang plateau

    但修訂過的zndx指數根據氣溫、土壤濕度及前期氣候濕潤度等因子能夠客觀的反映出西北地區的旱澇特徵。 （ 3 ）西北地區季與年區域旱澇等級表明：西北地區的乾旱雨澇有顯著的階段性和年際變化特徵。 1980 』 s到1990 』 s中期，氣候較濕潤，土壤濕度增墑較明顯； 1990 』 s中期以後是40年乾旱最異常的時段； 1960 』 s旱澇交替發生，旱澇趨勢接近常年； 1970 』 s氣候雖乾旱，但沒有1990 』 s中後期顯著。
  2. Preliminary discussion on flood storage and dentention area classification in the yangtze river basin

    長江流域蓄滯洪區分類的初步探討
  3. Study on the water quality evaluation and classification in the muling river

    穆棱河支流水質評價與水質類別分析
  4. The results showed that south dongting lake wetland satisfied the criterion of aaaa grade of china national scenic attraction. we studied and summarized as well the wetland landscape cultures resources, including the conception, function, classification and current situation of the wet - landscape culture in this region. it has been proved by the archaeologists that south dongting lake wetland was the center of the source of dongting lake, the cradle of yangtze river civilization and origins of the chu culture

    結果顯示，南洞庭湖濕地風景指數為85 . 6分，達到中國aaaa級風景區標準，其中萬子湖景區、明朗山景區、赤山島景區、胭脂湖景區均景觀突出；並根據上述模型計算的濕地景觀指數進行景觀等級（六級）劃分、排序和聚類分析。
  5. Primarily is to since 1995 the trouble circumstance of the yangtze river upper stream classification proceed statistics, application the safe condition of magistracy of yangtze river trunk line synthesize the valuation way, and proceeds to the safe condition of the yangtze river upper stream of three year take the gauge of, find out the main characteristics of trouble, and proceeds to trouble reason degree row preface, synthesize to analyze the trouble reason, clear and definite to have to establish the three gorges water area the shipping the safety to manage the system, and can insure the ships sail, anchor with homework safety

    主要是對1995年以來長江上游的事故情況分類進行統計，運用長江干線轄區安全狀況綜合評估辦法，對近三年長江上游的安全狀況進行評估，找出事故主要特點，對事故原因進行頻度排序，綜合分析事故原因，明確只有建立三峽庫區航運安全管理體系，才能確保船舶航行、停泊和作業安全。
  6. The degradation evolution route of the grassland ecosystem in xilin river basin was analyzed utilizing gis techniques from the view of the point of land use / land cover classification of multi - temporal landsat tm / etm + images

    從遙感影像的分類結果入手，用gis方法分析了錫林河流域草地系統的退化演化路徑。
  7. Based on a systematic investigation on the predatory natural enemy community in cotton fields to the north of the huaihe river of anhui province, the methods of polar ordination ( po ) and fuzzy cluster analysis ( fca ) were employed to study the dynamic classification of predatory natural enemy community in cotton fields and the method of principal component analysis ( pca ) was employed to study the major stages of change of predatory enemy community in cotton fields during the process of cotton growth and development

    摘要在對安徽省淮北棉田捕食性天敵群落進行系統調查的基礎上，採用極點排序和模糊聚類分析方法，研究了棉田捕食性天敵群落的動態分類；採用主成分分析方法，研究了棉田捕食性天敵群落在棉花生長發育過程中演變的主要階段。
  8. It meets the classification survey from ccs or zc. it ' s ideal for medium - size, handy - size ships in the river or the sea

    該系列舵機符合ccs及zc船檢規范，適用於內河及沿海的各類中、小型船舶。
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