酸土 的英文怎麼說

Effect of acid rain on leaching loss of nitrogen and phosphorus

酸雨對紫色土氮磷淋失的影響

The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno

研究結果表明： 1太白山南坡土壤的主要理化性質隨海拔高度的上升呈有規律的變化：隨海拔高度上升，機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒，海拔1600m以下出現粘化層；土壤有機質豐富，表層有機碳含量一般在20g kg以上，有機碳含量隨海拔高度升高而相應增加，海拔3500 3700m的灌叢草甸植被下有機碳含量最高；土壤呈酸性或微酸性，並隨海拔上升， ph值略微降低，酸性增強，海拔2700m以上的土壤多呈鹽基不飽和狀態，表明土壤淋溶作用較強， ph值和鹽基飽和度呈極顯著正相關；土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對比較穩定，土體中sio _ 2含量較高， cao含量較少， sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ，礦質元素含量的順序依次為： sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。

The roof is acid-resistant concrete and carries the acid distributor and its drive.

頂部有耐酸混凝土，裝有酸分部器及其傳動部分。

Soils that are acidified enhance the cadmium uptake by plants

酸性的土地使植物更容易吸收土壤中的鎘。

Effects of simulated acid rain on exchangeable cation transplant and acidifying potential in litchi orchard soils

模擬酸雨對果園土壤交換性陽離子遷移及其對土壤酸化的影響

The factors mainly include soil acidifying, higher organic matter content in the soil, lead of precipitum in the air and the processing of the tea leaves in the factory

這些來源主要包括：茶園土壤酸化和較高的有機質含量，大氣沉降物中的鉛和茶葉的加工過程。

It can also restrain the decomposition of organic substances in the soil and the bind of nitrogen, and wash away the nutritious elements, such as magnesium, calcium, and potassium. the acid rain deprives the soil. it acidifies the rivers and lakes, and dissolves the heavy metal in the soil into water, therefore poisons the fish

它可以直接使大片森林死亡，農作物枯萎；也會抑制土壤中有機物的分解和氮的固定，淋洗與土壤粒子結合的鈣、鎂、鉀等營養元素，使土壤貧瘠化；還可使湖泊、河流酸化，並溶解土壤和水體底泥中的重金屬進入水中，毒害魚類；加速建築物和文物古跡的腐蝕和風化過程；可能危及人體健康。

Determination of exchangeable acidity in forest soil

森林土壤交換性酸度的測定

Analysis on adjusting and control forest soil acidification

淺論森林土壤的酸化與調控

Effects of atmospheric nitrogen deposition on forest soil acidification

大氣氮沉降對森林土壤酸化的影響

The result of experiment shows that und er the conditions of proper ai r - entraining, concrete with 20 % fly ash has excellent frost - resistance. the frost - resistance of concrete with 55 % fly - ash which is admixed with united expansive agent ( uea ) has been improved greatly. the frost - resistance of sulfate aluminate cement concrete with high volume of fly - ash is dramatically lower than that of silicate cement concrete with the same volume of fly - ash

試驗結果表明：粉煤灰摻量為20的混凝土在適量引氣的條件下具有良好的抗鹽凍性能；粉煤灰摻量為55的混凝土在摻加uea膨脹劑后其抗鹽凍性能有明顯改善；大摻量粉煤灰硫鋁酸鹽水泥混凝土的抗鹽凍性大大低於同摻量的硅酸鹽水泥混凝土。

Organic acids are normal constituents of most agricultural soils.

有機酸是大多數農業土壤中通常的組分。

Such complexes might have affinity for detrimental inorganic oxyanions such as arsenate, a common toxic contaminant in soils. the purpose of this study is to investigate the influence of environmental conditions on the adsorption of arsenate on fe - oxyhydroxide - monlmorillonte complexes, which is significant to agrology, geochemistry and environmental science

本研究即以南方的土壤環境條件為參考，模擬在ph = 5時的酸性氧化條件下，土壤中低聚合羥基鐵?蒙脫石復合體的形成、物化性特徵及其吸附砷酸根陰離子的行為。

In order to elaborate the app licability of osl to loess, especially single aliquot regenerative protocol ( sar ), involving stimulation of the same disc with an infra - red laser diode followed by blue leds to polymineralic fine - grains of loess, such explanations as light bleaching, preheat, anomalous fading, prior - ir exposure were investigated in this paper. for drawing adequate coarse grains from loess, quartz and feldspars, as well as loess, were etched by hydrofluoric acid and fluorosilicic acid. the sequence of ages of holocene loess in weihe rivier basin has been established by single - aliquot ( sar ) and multiple - aliquot using fine - grains and sar using coarse - grains

本文通過渭河流域全新世黃土的光曬退實驗，地表黃土樣品的d _ e值測定，細顆粒單片的預熱、反常衰退、紅外暴露實驗，說明釋光測年在全新世黃土中應用的可行性及單片再生劑量法（ sar ）在黃土細顆粒中的適用性；為了從黃土中分離出足夠的粗顆粒，進行了純石英和長石的氫氟酸（ hf ）和氟硅酸（ h _ 2sif _ 6 ）溶蝕實驗，黃土粗顆粒石英溶蝕分離實驗；通過細顆粒單片、多片的blsl 、 irsl和post - irosl ，熱釋光，及粗顆粒石英的blsl的年代測定，選擇適于全新世黃土的釋光測年方法，並建立了渭河流域全新世黃土的年代序列。

Glass in building - basic alkaline earth silicate glass - float glass

建築物用玻璃.基本堿土硅酸鹽玻璃.平板玻璃

Glass in building - basic alkaline earth silicate glass - part 1 : float glass

建築物用玻璃.基本堿土硅酸鹽玻璃製品.第1部分:浮法玻璃

Glass in building - thermally toughened alkaline earth silicate safety glass - definition and description

建築物玻璃.熱鋼化堿土硅酸鹽安全玻璃.定義和描述

Oxytetracycline hcl bp usp injectable grade

注射級鹽酸土霉素

Determination of bacterial endotoxins in oxytetracycline hydrochloride for injection

注射用鹽酸土霉素的細菌內毒素檢查

Hebei shengxue dacheng pharmaceutical co., ltd. is a large - size state - owned enterprise focusing on antibiotics in china, streptomycin sulphate, oxytetracycline base and oxytertracycline hcl are our main products

河北聖雪大成制藥有限責任公司是專業生產抗生素的大型國有企業，主導產品有硫酸鏈黴素、土霉素和鹽酸土霉素等。