Manganese
['mæŋgəniːz] or [,mæŋɡə'niz]
解釋/意思:
(noun.) a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals.
編輯:朱利叶斯--From WordNet
解釋/意思:
(n.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty, but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8.
錄入:莫伊拉
同義詞及近義詞：
n. Black oxide of manganese (the oxide having the same name as the metal), peroxide or deutoxide of manganese.
錄入:罗莎莉
解釋/意思:
n. a hard and brittle metal of a grayish-white colour somewhat like iron.—adjs. Manganē′sian Manganē′sic Mangan′ic Mang′anous; Manganif′erous.—n. Mang′anite gray ore of manganese used in glass manufacture.
手打:特伦斯
例句/造句/用法:
- The manganese itself combines with part of the chlorine originally in the acid, but not with all. 伯莎M.克拉克. 科學通論.
- In these were found large quantities of iron, considerable percentages of nickel, as well as cobalt, copper, silicon, phosphorus, c arbon, magnesium, zinc, and manganese. 李貝. 西洋科學史.
- The use of manganese and other highly oxidisable metals for this purpose was discovered. 威廉·亨利·杜利特. 世紀發明.
- But that was for the manganese. 喬治·艾略特. 米德爾馬契.
- Professor Faraday as early as 1824 had noticed a change in colour gradually produced in glass containing oxide of manganese by exposure to the rays of the sun. 威廉·亨利·杜利特. 世紀發明.
- Preparing oxygen from potassium chlorate and manganese dioxide. 伯莎M.克拉克. 科學通論.
- Mix a small quantity of potassium chlorate with an equal amount of manganese dioxide and place the mixture in a strong test tube. 伯莎M.克拉克. 科學通論.
- Preparing chlorine from hydrochloric acid and manganese dioxide. 伯莎M.克拉克. 科學通論.
- Mushet (British patent No. 2,219, of 1856) of adding spiegeleisen, a triple compound of iron, carbon and manganese, to the charge in the converter. Edward W. Byrn. 十九世紀發明進展.
- The heat causes the manganese dioxide to give up its oxygen, which immediately combines with the hydrogen of the hydrochloric acid and forms water. 伯莎M.克拉克. 科學通論.
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