contour ditch中文是什么意思

• 等高沟

• "contour"中文翻译    n. 1.外形，轮廓；周线，轮廓线。 2.等高线，恒值线 ...
• "ditch"中文翻译    n. 1.水沟，渠。 2.壕沟。 fall ...
• "ditch" 中文翻译 :    n. 1.水沟，渠。 2.壕沟。 fall into a ditch 跌进沟里。 be driven to the last ditch 陷入绝境。 die in the last ditch 奋战而死。 the Big D- 〔美俚〕 1. 大西洋。 2. 巴拿马运河。 the D- 〔美空军俚〕英吉利海峡；北海。 the last ditch struggle 垂死挣扎，负隅顽抗。 vt. 1.在…开沟，在…挖壕沟；用壕沟围绕。 2.〔美国〕使(火车)出轨，使(汽车)冲落沟内。 3.〔美俚〕摆脱，抛弃，甩开，避开(同伴等)；逃避(责任)等。 4.使(飞机)迫降海上。 a pasture hedged and ditched 用树篱和沟渠围起来的牧场。 be [get] ditched 〔美俚〕(飞机)迫降海上。 I ditched that old hat of yours. 我把你那顶旧帽子扔掉了。 He ditched the cops by turning off his lights and driving down an alley. 他关掉车灯，朝巷子深处驶去，想用这种办法逃开警察。 vi. 1.开沟，挖沟；修沟。 2.〔美国〕(火车)出轨，(汽车)冲落沟内；(陆上飞机)迫降海上。 ditching device (无人驾驶飞机的)迫降装置。 hedging and ditching 沟道和树篱的整修。
• "to ditch" 中文翻译 :    一个是
• "contour" 中文翻译 :    n. 1.外形，轮廓；周线，轮廓线。 2.等高线，恒值线；【电视】等场强线(＝contour-line)。 3.概略，大要；形势。 4.【电学】回路。 the irregular contour of the coast 曲折的海岸线。 the contours of things 情势。 adj. 1.与轮廓相合的。 2.(表示[循着])等高线的。 vt. 1.描画…的轮廓；画…的等高[等值]线。 2.顺等高线(作业)〔如开沟，筑路等〕。
• "aeration ditch" 中文翻译 :    通气渠
• "air ditch" 中文翻译 :    明渠
• "antitank ditch" 中文翻译 :    反坦克壕
• "berm ditch" 中文翻译 :    边坡截水沟; 护道排水沟; 护路排水沟; 平台沟
• "berm of ditch" 中文翻译 :    沟岸小道
• "berme ditch" 中文翻译 :    边坡截水沟
• "big ditch" 中文翻译 :     〔美俚〕 1.大洋。 2.〔the B- D-〕 大西洋；巴拿马运河。
• "blind ditch" 中文翻译 :    暗沟。
• "borrow ditch" 中文翻译 :    借土沟
• "boulder ditch" 中文翻译 :    乱石盲沟
• "butterfly ditch" 中文翻译 :    蝴蝶沟
• "canal ditch" 中文翻译 :    泥浆槽
• "catch ditch" 中文翻译 :    集水沟
• "cleaning ditch" 中文翻译 :    壕沟清理
• "collecting ditch" 中文翻译 :    集水沟
• "collection ditch" 中文翻译 :    集水沟
• "collector ditch" 中文翻译 :    集水沟
• "combined ditch" 中文翻译 :    合流排水沟渠
• "covered ditch" 中文翻译 :    加盖暗沟
• "cross ditch" 中文翻译 :    横沟

• Potassium lost by runoff was equal to that lost by bed load in fallow farming system , but in the systems with more sediment such as traditional farming system , grass stripe , and contour ditch potassium loss was mainly through bed load which accounte
  08 ，泥砂流失量和有机碳流失量占全年流失量的90以上。径流量和泥沙流失量的大小顺序均为无保护性措施、侵蚀严重的试验区5 （ ck ：对
• ( 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。
• ( 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 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。

• contour ditch перевод