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- Raney-type alloy for the preparation of Raney Nickel catalyst. 要求是雷尼鎳催化劑的前軀體,也就是雷尼鎳的半成品。
- Abstract: The reasons why the Raney Ni catalyst loses it"s a ctivity system matically.The method of regenerating the disac tivity catalyst according to catalytic principle is described.It was used in sorbitol production plant,and the effect was good. 文摘:對山梨醇用雷尼鎳催化劑的失活原因進行了系統分析,根據催化原理找出了失活催化劑的再生方法,經催化劑活性檢測及實際應用表明效果較好,值得有關廠家參考使用。
- They spend the winter(s) in a warmer climate. 他們在氣候較暖的地方過冬。
- Most plural nouns in English end in "s". 英語的復數名詞多以“s”結尾。
- The sweater had shrunk after repeated washing(s). 這件套頭毛衣洗過多次已縮水了。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的愛好。
- Answer the following question(s). 回答下列問題。
- Most plural nouns in English end in s'. 英語的復數名詞多以s結尾。
- The drug affects one's power(s) of concentration. 這種藥影響人精神不能集中。
- Raney nickel catalyst for hydrogenation of dodecyl dinitrile to dodecyl diamine was chosen on the basis of experiment. 摘要通過試驗,優選了十二碳二腈加氫制十二碳二胺用骨架鎳催化劑。
- Here are the designs. Which one(s) do you prefer? 這就是那些圖樣.;你喜歡哪一個[些]?
- Which journal(s) do you subscribe to? 你訂閱哪一種雜志?
- A modified Raney Ni catalyst is developed to make citronellol from citronellal by hydrogenation in a lower pressure. 研制了適用于香茅醛在較低壓力下選擇加氫制備香茅醇的改性骨架鎳催化劑,香茅醛的轉化率達99。
- The novel had an enormous vogue in the 1930's. 這本小說在三十年代曾廣為流傳。
- He earned four A's in the final examinations. 他期末考試四門功課得優。
- What is more, the way to preparation and regeneration of Raney nickel catalyst is studied tentatively. 同時,本文也對雷尼鎳催化劑的制備和再生活化等工藝條件進行了探索性研究。
- The Beatles were the pop idols of the 60's. 披頭士樂隊是六十年代人們崇拜的偶像。
- He returned to the fold at his 80's. 他在八十高齡又恢復原來的宗教信仰。
- She has an amused twinkle in her eye(s). 她高興得雙目熠熠發亮。
- Driving with worn tread(s) can be dangerous. 輪胎胎面磨損的汽車開著有危險。