dhv 中文意思是什麼
dhv
解釋
鴨肝炎簿-
Quite a few pilot research projects have been carried out. on demonstrating new silviculture techniques for re - vegetation in dhv, but there still exist great difficulties in carrying out large - scale afforestation engineering
目前已經開展了一系列的有關造林技術的前期研究項目，但大規模的造林培育工程尚難以開展。 -
The dry - hot valleys ( dhv ) are located mainly in the deeply incised valleys along the upper streams of several international and domestically rivers, like yangtz, zhu, lanchang, hong, and nu rivers
乾熱河谷主要分佈於長江、珠江、瀾滄江、紅河和怒江等國內和國際性河流的上游深切河谷地段。 -
Measuring and grinding machine for raw edge v - belts type dhv - 3000
Tgm - 5000新概念同步帶磨背機 -
The environment in dhv is facing the serious vulnerable period in the history due to its nature situation of half - year dry period, fragile geological structure and shallow soil, and its social situation of over dense population and over farming
由於乾熱河谷地區的地質結構不穩定、土層淺薄、人口膨脹、過度耕種，尤其長達半年的旱季等原因，導致該地區的生態環境處于極端的脆弱階段。 -
This paper briefly described the reasons of formation of dhv from view of climate and geographical conditions, and by referring to great deal of documents, analyzed the historical case and present status of the vegetations in dhv
本文對乾熱河谷形成的地理和氣候原因進行了闡述，並通過引證大量文獻，分析了乾熱河谷植被的歷史情況和現狀。 -
Design hourly volume dhv
設計小時交通量 -
Since the environmental situation in valley influenced directly the water body of river, the soil erosion control and re - vegetation in dhv is the most urgent task in the process of environmental harness along the rivers
由於乾熱河谷的植被情況直接影響河流水體的質量，因此河谷內的植被恢復和水土保持就成為流域治理的最重要的任務。 -
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