According to the material of field investigation and survey, tectonic erosion periods and their erosion are studied.

根據(jù)野外調(diào)查和實(shí)際測(cè)量資料，研究了黃土高原構(gòu)造侵蝕期和期內(nèi)造成的侵蝕。

The research results of vegetation recovery and soil erosion characteristic in corroded ditch of purple soil hills using plant-fencing are:(1) The balsamroot and giant reed can shape plant-fencing in half of year and the effect of preventing soil erosion is remarkable.

植物活籬笆恢復(fù)紫色土侵蝕溝植被及水土流失特征研究結(jié)果：(1)香根草、蘆竹栽植半年即可形成植物籬笆，防治水土流失效果顯著日韩欧美女自拍图片大全集高清视频。

Bitter [3] and Neilson and Gilchrist [4] consider, in addition, cutting erosion that prevails to low angles and deformation erosion to high angles of impact.

彼特[3]和勒爾猻和里斯特[4]考慮，此外www看黄网站www，侵蝕切割普遍存在低角度和變形的侵蝕免费无码动漫AⅤ片在线观看，高角度的影響。

Slope soil erosion is a complex interaction of runoff scouring, slope anti-erosion effects and ground substance supplementing capacity.

坡面土壤侵蝕是徑流沖刷和坡面抗蝕作用以及地面物質(zhì)補(bǔ)充能力之間相互作用的復(fù)雜過(guò)程在线看国产v黄。

Groyne ; erosion scour ; stability of erosion ; critical slope of eroded pit ; reliability analysis of random system

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This paper presents the mechanism of erosion scour around groynes of levee projects and a probability method of the reliability analysis for groyne erosion under random factors.

分析了防護(hù)丁壩沖刷的機(jī)理女女激情性爱在线观看，用概率分析方法研究了在隨機(jī)因素影響下防護(hù)丁壩抗沖刷的可靠性問(wèn)題。應(yīng)用Rosen-blatt變換確定防護(hù)丁壩抗沖刷破壞的功能函數(shù)在隨機(jī)因素影響下的可靠性指標(biāo)igao视频。

Ephemeral gully erosion is a common type of water erosion and responsible for heavy damage to agricultural land.

淺溝侵蝕是東北黑土區(qū)坡耕地上常見(jiàn)的侵蝕形式欧美激情文学，對(duì)耕地造成了嚴(yán)重的破壞。

Gully erosion is an important kind of soil erosion, which is not only a key process resulting in soil degradation, but also a major source of sediments in rivers.

沖溝侵蝕是一種重要的土壤侵蝕方式一级片不卡网站，它不但是導(dǎo)致土地退化的一個(gè)重要過(guò)程性交无码视频一区二区，還是江河泥沙的一個(gè)主要來(lái)源[1]。

The erosion of hydrogen sulfide and the nature oxidation tendency of erosion products were studied at elevated temperature.

研究了高溫條件下硫化氫的硫化腐蝕狀況及腐蝕產(chǎn)物的自然氧化傾向性99re这里只有是精品。

If the water erosion or swelling, the use of 2% boric acid water solution or 0.1 nights佛奴mine Hydropathic aqueous solution, exudate and erosion after the disappearance of topical corticosteroid preparations, such as eczema cream, Qushi oil, cream, etc.

若出水糜爛或紅腫時(shí)丝袜欧洲另类自拍视频在线，用2％硼酸水液夜或0.1雷佛奴水溶液濕敷，滲液與糜爛消失后欧美丝袜特黄大片，外用皮質(zhì)類(lèi)固醇激素制劑97AAAAA免费毛片，如濕疹霜、祛濕油日韩久久久精品、膚輕松霜等在线污视频国产一区。