erosion ratio 中文意思是什麼
erosion ratio
解釋
侵蝕比-
Conservation tillage method is being adopted and extended gradually at the present time in northern arid and semi - arid regions of china as a effective method to solve those problems in crop production, like poor grain yield, limited utilization ratio of precipitation, serious soil erosion and low mechanization level
針對我國北方旱農地區糧食產量低而不穩、土壤侵蝕日趨嚴重、機械化水平不高等普遍性問題，目前正逐步推行保土保墑的保護性耕作方法。 -
The effect of splash erosion on sloping surface erosion is evident. after the splash erosion was eliminated, the erosion amount was less than half of the amount when the splash erosion existed. it indicated the splash erosion contributed more than 50 % erosion amount, but to the different soil type, the contribution ratio of erosion amount varied, such as the soils derived from granite, the contribution ratio reached 70 %
在有無紗網兩種處理條件下的產沙實驗表明，雨滴濺蝕對坡面土壤侵蝕量有明顯的影響，消除濺蝕作用後土壤侵蝕量不到有濺蝕作用的一半，說明濺蝕對坡面產沙的貢獻佔50以上，不同土壤類型其貢獻率不同，如結構性較差花崗巖紅壤，濺蝕貢獻率高達70 。 -
In the late part of the active developing period, the temporal variation of sediment concentration and sediment transport ratio of each rainfall can be expressed by exponent function and the variation presents quadratic polynomial function in the stable developing period. the spatial variation character of sediment yields with space of the experimental watershed model. the active position of soil erosion and sediment yield of the experimental watershed model changes from the downside to the upside with the developing process of the watershed model
流域模型侵蝕產沙空間變化特徵侵蝕產沙的活躍部位隨流域模型發育過程呈現由流域模型下部逐漸向上部發展特徵，其中流域模型下中部為發育初期時段和發育活躍時段侵蝕產沙的活躍部位，流域模型上部是發育穩定時段侵蝕產沙的活躍部位。 -
Variations in pressure with and without aeration in cavitation region are measured and the compressible characteristics of pressure waveforms and relation between mach number and compression ratio are analyzed ; the time - averaged pressure profiles of different air concentration in cavitation erosion region are measured, the variations of the pressure with air concentration and effects of back pressure on cavitation erosion are analyzed ; the relations between least air concentration to prevent cavitation erosion and flow velocity are proposed ; the cavitation numbers with and without aeration in cavitation region are compared
實測了空化區摻氣前後壓力的變化，分析了壓力波形的可壓縮流特徵以及馬赫數與壓縮比的關系；實測了空蝕區不同摻氣濃度的時均壓力分佈，分析了壓力隨摻氣濃度的變化及背壓對空蝕的影響；提出減免空蝕的最低摻氣濃度與流速的關系，比較了摻氣前後水流的空化數。 -
Because of the work mentioned above, a new method of renewing ancient thickness is brought forward, the method of the continuing tendency of the uneroded stratum thickness, the method of the variety rate of the reference layer thickness and the method of the ratio of the contiguous layer thickness are used to renew the erosion thickness in ludong area for the first time and the method of fuzzy synthetic evaluation is used to prioritize the favorable places for prospecting for oil and gas
在此基礎之上，提出了一種恢復古厚度的新方法，並首次在陸東地區採用未被剝蝕地層厚度趨勢延伸法、參考層厚度變化率法和鄰層厚度比值法進行剝蝕厚度恢復，以及採用模糊綜合評判方法優選出了有利的勘探目標。 -
The breakdown of soil aggregates was the premise of soil erosion, and dispersion ratio explained the stabilization of soil aggregates of six experimental soils, which was calculated by the content of micro - aggregates
以微團聚體含量為基礎計算的分散率，說明了六種供試土壤團聚體的穩定性，第四紀粘土紅壤團聚體穩定，花崗巖紅壤團聚體較易破壞。
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