河蝕周期 的英文怎麼說

中文拼音 [shízhōu]
河蝕周期 英文
cycle of river erosion
  • : 1 (天然的和人工的大水道) river 2 (指銀河系) the milky way system; the galaxy 3 (特指黃河) t...
  • : Ⅰ動詞1. (損失; 虧耗) lose 2. (腐蝕) erode; corrode Ⅱ名詞(天體現象) eclipse
  • : Ⅰ名詞1 (圈子; 周圍) circumference; periphery; circuit 2 (星期) week 3 [電學] (周波的簡稱) c...
  • : 期名詞[書面語]1. (一周年) a full year; anniversary 2. (一整月) a full month
  1. K - ar age of an illite from alteration rock in the contact zone around lianhuashan porphyry is 38. 6ma. with referencing to the main metallogenic period of yulong copper metallogenic zone and of ailaoshan gold metallogenic zone, it is suggested that the time of formation of deposits in the district studied is probably in a period of time from 38. 6ma at earliest to 20ma at latest. this time is equivalent to the origination time of two important tectonic events, i. e., lanping movement and the turning point when ailaoshan - red river fault turned from sinisteral into dextral

    獲得了蓮花山巖體圍接觸帶變巖中伊利石k - ar年齡38 . 6ma ,參考玉龍銅礦帶和哀牢山金礦帶的主要成礦(分別為30ma左右及26ma ) ,釐定本礦集區成礦年齡下限為38 . 6ma ,上限為20ma ,與兩次重要的構造事件?蘭坪運動的起始時間及哀牢山?紅斷裂由左旋轉為右旋的時間相當。
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