鉀蝕變 的英文怎麼說
中文拼音 [jiǎshíbiàn]
鉀蝕變
英文
potash alteration-
The author suggests that for those kinds of samples like ophiolite which formed in the underwater environment and had very low potassium content, it should be better to determine their formation age by the sm - nd method as it is less sensitive to alteration. however, the step heating 40ar - 39ar spectra could often reflect the influence of later geological events on isotope system
認為對蛇綠巖這類形成於水下環境，含鉀極低的樣品，其巖體的形成年齡宜選用對蝕變影響反應不明顯的sm - nd方法測定；但階段升溫~ （According to the geological conditions and the corrosive medium composition of the shaft well ， the damaging reason and the mechanism of the concrete attack in the intake shaft well of “ 635 ” project are analyzed ， and the corrosion - prevention treating method for the shaft well concrete is presented
水利樞紐發電引水洞豎井段圍巖中，有黃鐵礦脈風化形成的黃鉀鐵礬化蝕變帶通過.經對豎井襯砌混凝土腐蝕破壞機理的分析后認為，必須採用有效的防腐材料，將混凝土與侵蝕介質隔離開來，對豎井混凝土進行防腐蝕處理According to the constructive principles of these diagrams, the following aspects must be thought carefully : the rock types to be studied must be the same or nearly the same as those that can be discriminated by the diagram ; to avoid mixed or incorrect signals that could be produced, two or more such diagrams shall have to be jointly used ; for special rock types, such as a - type granites or potassic igneous rocks, special discriminative diagrams have to be determined and selected respectively ; the samples to be studied can not be altered ; in general, the diagrams must be used carefully with archean samples ; the petrotectonic assemblage or an expert system are recommended to be used together with the discrimination diagrams
強調指出：所採集的樣品必須新鮮（無蝕變或極弱蝕變） 、非堆晶的巖石；選擇的判別圖解必須與判別的巖石類型相一致，即對花崗巖類要用花崗巖的判別圖解，不能用玄武巖的判別圖解；對特殊類型巖石要選擇專門用於該類型巖石的判別圖解，如堿性花崗巖，鉀質火成巖；要應用多種圖解綜合判斷；不能用單個樣品，而應作多個樣品分析；要注意所選擇判別圖解的特別說明等。
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