Study on the alteration of Dongping gold orefield, Hebei;
河北东坪金矿田蚀变作用研究
The main alterations are as follows: muscovitization, dolomitization, biotitization, sericitization, chloritization,tourmalinization, greisenization and so on.
这些蚀变作用分别发生于１７７。
Based on diagnostic spectral characteristics of the ions included in altered minerals and field theory,the authors believe that the alteration occurred in a rock body particle and is closely related to the temperature,pressure and surrounding structure of hydrothermal deposits,and has the field characteristics.
基于蚀变矿物所含有离子或基团的诊断波谱特性和场的理论,对蚀变信息机理研究,认为蚀变作用与热水溶液的温度、压力及周围构造发育情况密切相关而具有场的特征。
Gold mineral is native gold, its grain size is fine, its fineness is high.
围岩蚀变作用不强。金矿物为自然金，粒度细、色高。
Alteration is very extensive in some areas and serpentinites are common in Greece.
在一些地区蚀变作用非常广泛，在希腊蛇纹岩是常见的。
The Cameron Lake Gold Deposit,Northwestern Ontario,Canada:Geological Setting,Structure,and Alteration
加拿大安大略西北部卡梅伦湖金矿床的地质背景、构造和蚀变作用
Except the simmering in deep area, other three kinds of hydrothermal karst would associate and induce geological disasters.
除深部相浸煮蚀变作用外，其余3种热水岩溶作用都可伴生和引起地质灾害。
Study on the mechanism of anti - tranishing for silver antiques;
银器文物防变色缓蚀作用机理的研究
Hydrothermal alteration is closely associated with gold mineralization, but different types play different roles in gold mineralization.
热液蚀变与金矿化关系密切，但不同的蚀变对金矿化作用不同。
The basic type of rock in alliterated belts is shard ruff and major alteration type is the mineralization of montmorillonite, siliceous mineralization, the width of the minerogenetic alliterated belts is17 m.
蚀变带的岩石基本类型为玻屑凝灰岩，主要的蚀变类型为蒙脱石化作用和硅化作用。
A Research on Failure Mechanism of Drilling String in Interaction of Stresses and Corrosion;
交变应力和腐蚀交互作用下钻柱失效机理研究
erosion by chemical action.
由化学作用引起的侵蚀或腐蚀。
Function of Garlic Juice as Corrosion Inhibitor in Oilfield Corrosive Medium
大蒜汁在油田腐蚀介质中的缓蚀作用
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。
acids act on metals
酸对金属起腐蚀作用。
Zinc is generally caustic to foliage.
锌常对幼叶有腐蚀作用。
The furniture should be of smooth, hard material not liable to warp or corrode.
家具应使用光滑、坚硬、不易变形和腐蚀的材料制作。
Study on the Effect and Change Characteristic of Soil Surface Roughness during the Course of Water Erosion;
坡面水蚀过程中地表糙度的作用及变化特征研究
Research on Corrosion Process and Chemical Composition of Cuihua Mountain Springs Water in Qinling Gneiss Area in Shaanxi Province;
陕西秦岭翠华山片麻岩区泉水溶蚀作用与化学成分变化规律研究
THE APPLICATION OF SAM TEACHNIQUE ON EXTRACTING ALTERATION ABNORMITIES FROM MULTISPECTRAL RS DATA
光谱角技术在多光谱遥感蚀变异常提取工作中的应用