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水平沟的英文

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"水平沟"怎么读用"水平沟"造句

英文翻译手机手机版

  • contour trench
  • horizontal ditch

例句与用法

  • Primary study on suitable spacing of level trench in grassland small watershed
    草地小流域治理水平沟适宜间距初探
  • Sulcus horizontalis cerebelli
    小脑水平沟
  • In abandon farmland afforestation , can use soil preparation of channel of hold up fosse , level , dig the measure such as segregation belt
    在弃耕地造林,可采用撩壕、水平沟整地、挖隔离带等措施。
  • ( 2 ) the losses of organic carbon , nitrogen , phosphorus and potassium were different in different farming systems . this losses of these elements according to respective farming systems was the following order : tradition > grass stripe > contour ditch > fallow > contour dam . compared with traditional fanning practices , others farming systems reduced losses of organic carbon , nitrogen , phosphorus and potassium and losses in contour dam , contour and fallow were much less than grass stripe and contour ditch
    ( 2 )不同农作措施径流小区有机碳、氮、磷、钾流失差异明显,有机碳、氮、磷、钾流失总量的顺序为:顺坡农作水平草带水平沟休闲等高土埂,同顺坡农作相比,其他农作措施均有减少有机碳、氮、磷、钾流失的作用,以等高土埂、等高农作、休闲处理减少土壤有机碳、氮、磷、钾流失的效果较好。
  • According to climate condition , soil condition and afforesting tree species and water requirement rule of forest and grass , the paper analysed and calculated the slope length for collecting stream of three site preparation methods which were reverse - slope terrace , level trench and scale - hole , and the slope length for collecting stream of deferent gradients and planting bandwidths were acquired
    摘要根据宁南山区的气候、土壤、造林树种等,按照林草植被建设的水分需求规律,对不同水上流失区的反坡梯田、水平沟、鱼鳞坑3种整地方式的集流坡面长度进行分析与推算,计算出了不同坡度、植树带宽度下的集流坡长。
  • ( 3 ) the farming systems which had a less degree of soil erosion and sedimentation , organic carbon was lost mainly through runoff but in farming systems in which soil erosion was serious such as in grass stripe , contour ditch , traditional farming system , the loss was through bed load . nitrogen loss through runoff was 81 . 9 % - 93 . 4 % of the total . this loss through runoff comprised 78 % - 87 . 6 % dissolved nhvn and no " 3 - n although the former was slightly higher than latter as it made up 55 . 14 % of the lost nitrogen
    ( 3 )侵蚀程度较轻,泥沙流失量较小,特别是推移质流失量较小的农作措施处理的径流小区,如休闲处理、等高土埂和等高处理的小区中有机碳流失以径流流失为主,相反,如水平草带处理、水平沟处理和顺坡农作处理的径流小区中,有机碳流浙江大学博土学位论文失以推移质流失为主。
  • The reference area method , the mode method , and the non - effective coefficient of cultivated land and the cultivated land consolidation criterion coefficient for low , middling and high consolidation levels in yanqing county , the mode of village residential land readjustment in yanqing county may all be applied for the other similar counties for estimating the land consolidation potential . and the cultivated land consolidation potential and the villages residential land readjustment potential in yanqing county may be used as basic scientific data in yanqing county for land consolidation planning and feasible study of land consolidation projects
    本文提出的样区法、模式法以及采用上述两种方法测算出的延庆县沟路渠田坎系数、不同耕地整理水平沟路渠田坎系数标准和农村居民点整理模式等均可作为同类地区在测算土地整理潜力时参考;测算出的延庆县耕地整理潜力和农村居民点整理潜力可作为延庆县土地整理规划和土地整理项目可行性研究的科学依据。
  • The results show that ( 1 ) the system of contour dams , contours and fallow had positive impact on water and soil losses than grass stripes and contour ditch . at the same time it was showed that contour dams , contours , fallow significantly reduced soil erosion and water loss , grass stripe and contour ditch had recorded reduction in water and soil losses although to a much less extent than above 3 farming systems . most of sediment was bed load in all the systems except in contour dams and contour fanning
    研究的主要结论如下: 1 、运用坡面径流小区法系统地研究了当地农业生产活动中不同农作措施下红壤坡耕地水土流失特征、土壤养分流失规律及形态特征,结果表明: ( 1 )同顺坡农作措施相比:其它农作措施均具有明显减轻水土流失的作用,等高土埂,等高农作、休闲处理控制水土流失的效果优于水平草带和水平沟处理。
用"水平沟"造句  

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