Downward from the peak to the piedmont on the basin side are respectively peneplanes of Beitai stage and Dianziliang stage in Paleogene,peneplane of Tangxian stage in Neogene,and seven-level river terraces and six-level pediments in Quaternary.
断块山地的阶段性隆升在山麓地带形成了由山麓剥蚀面与河流阶地构成的6级联合地貌面,并在山区河段形成了由急流段与缓流段相间分布的河流纵剖面形态,急流河段的最高点对应阶地在上游方向上的消失点。
The ratios of Al 2O 3/SiO 2 and kaolinite+illite vs quartz for whole rock indicated the intensities of both chemical weathering and erosion.
研究结果表明 ,全岩的化学蚀变指数 (CIA)值主要代表自然作用下化学风化的强度 ;而硅铝率 (或Al2 O3 SiO2 比值 )和 (高岭石 +伊利石 ) 石英比值在全岩研究中代表化学风化与侵蚀作用的共同强度 ;Al2 O3 SiO2 比值与CIA值的相关关系可以作为区分化学风化作用自然因素变化与侵蚀作用加剧的一种新的分析方法 :当样品CIA值异常偏离趋势线时 ,反映出自然化学风化作用的异常变化 ,而Al2 O3 SiO2 比值的异常偏离则可能反映了表层侵蚀作用的加剧 ;结合当地自然环境和人类活动的特点 ,可以推断人为因素对表层红土剖面地球化学特征变异的干预和对侵蚀作用加剧的贡
Further more, Cl\+- content of river water drops off markedly from upstream to downstream, which just is the showing of feature that chemical erosion on evaporate is strong relatively in river source area under high sea level\|frigid and arid area.
计算表明,长江河源区河水中主要化学成分来自蒸发岩中Na+和Cl-,在河流水化学成分中占比例最大,长江河水中Cl-含量从河源区向下游明显逐渐减小,反应出河源区高寒干旱环境下河流蒸发岩的化学侵蚀作用较强的特征。
the erosion of beaches.
海岸发生的侵蚀作用。
the erosive effects of waves on the shoreline.
波浪对海岸的侵蚀作用。
The bed of a river is partly worn away by corrosive action.
河床部分地就是被这种侵蚀作用冲蚀的。
The wasting process of erosion.
侵蚀作用的逐渐腐朽过程
Erosion has dissolved acres of topsoil.
侵蚀作用已使大量表土层流失。
The waves eat into them only when they are charged with sand or pebbles.
只有挟带沙砾和碎石的波浪，才起侵蚀作用。
Study on Durability of Reinforced Concrete Members Due to Chloride Ingression;
氯离子侵蚀作用下混凝土构件的耐久性
Studies concerning the effect of fluoride on resistance to erosion of soft drinks on enamel of primary teeth
氟化物拮抗软饮料对乳牙釉质侵蚀作用的研究
Study on the coke erosion slag with different FeO content
不同FeO含量的炉渣对焦炭侵蚀作用的研究
Experimental study on deceleration of soil erosion by watershed vegetation
流域植被对减缓土壤侵蚀作用的实验研究
Erosion, the process of removal of rock waste, will be discussed in later chapters.
侵蚀作用，也就是岩屑的迁移作用，将在后面几章中讨论。
Uplift and erosion at last produced the desert landscape we see today.
最后，地表抬升和侵蚀作用产生了我们今日所见的沙漠风貌。
A nearly flat land surface representing an advanced stage of erosion.
准平原一种因晚期侵蚀作用而形成的近似平坦的地面
erosion by chemical action.
由化学作用引起的侵蚀或腐蚀。
Abrasion also abets wind erosion.
磨损作用也助长了风的侵蚀。
Rock underlying glaciers is eroded by plucking.
冰川下面的岩石则是通过拔削作用被侵蚀的。
Study on chloride ion ingress into concrete under drying-wetting cycles
干湿循环作用下混凝土抗氯离子侵蚀研究
ELECTRIC EROSION FAILURE MECHANISM OF THE SILVER FILMED COPPER ELECTRICAL CONTACT OF UNDER ELECTRICAL ARC
电弧作用下铜基覆银触头的侵蚀失效机理