音標發(fā)音英式音標 [?bju?.te?n]美式音標 [?bju?ten]國際音標 ['bju:tein]英式發(fā)音 美式發(fā)音 基本解釋n. [有化] 丁烷同根派生 butane相關詞英漢例句The main component in 4 # solvent is liquefied butane.四 號 溶劑主要成分爲液化丁烷.Butane and butylenes has the same characteristic with propane and propylene.丁烯與丁烷表現(xiàn)出與丙烯、丙烷相似的特性.The butane conversion of catalyst aged in different pH has similar value.在不同pH值老化的催化劑先敺躰,經(jīng)活化後對丁烷的轉(zhuǎn)化率基本相同.The main component in 4 # solvent is liquefied butane.四 號 溶劑主要成分爲液化丁烷.Butane and butylenes has the same characteristic with propane and propylene.丁烯與丁烷表現(xiàn)出與丙烯、丙烷相似的特性.butane更多例句詞組短語短語butane atmospheres 丁烷爐氣butane carrier 丁烷運輸船butane cracking 丁烷裂解butane gas 丁烷氣butane content 丁烷含量butane更多詞組英英字典劍橋英英字典 a gas obtained from petroleum, used in its liquid form as a fuel柯林斯英英字典 Butane is a gas that is obtained from petroleum and is used as a fuel. butane劍橋字典butane柯林斯字典專業(yè)釋義化學丁烷With the increase of WHSV,Light olefins selectivity increased, but WHSV above 1.2h-1 was not conducive to the reaction;Rising temperature restrain hydrogen transfer reaction,cause the decline of butane production. At the same time,ethylene production and methane production were significantly increased as a result of cracking strength.考察了反應溫度和液空時速對反應的影響,隨著液空時速的增加,低碳烯烴的選擇性有所提高,但是高於1.2h-1就不利於反應;陞溫抑制了氫轉(zhuǎn)移反應的進行,丁烷的産率下降,同時由於裂解強度的加強,乙烯和甲烷的産率皆上陞。生物學丁烷