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- Raney-type alloy for the preparation of Raney Nickel catalyst. 要求是雷尼镍催化剂的前躯体，也就是雷尼镍的半成品。
- 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:对山梨醇用雷尼镍催化剂的失活原因进行了系统分析，根据催化原理找出了失活催化剂的再生方法，经催化剂活性检测及实际应用表明效果较好，值得有关厂家参考使用。
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- Answer the following question(s). 回答下列问题。
- Most plural nouns in English end in s'. 英语的复数名词多以s结尾。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- Raney nickel catalyst for hydrogenation of dodecyl dinitrile to dodecyl diamine was chosen on the basis of experiment. 摘要通过试验，优选了十二碳二腈加氢制十二碳二胺用骨架镍催化剂。
- Here are the designs. Which one(s) do you prefer? 这就是那些图样.;你喜欢哪一个[些]?
- Which journal(s) do you subscribe to? 你订阅哪一种杂志?
- A modified Raney Ni catalyst is developed to make citronellol from citronellal by hydrogenation in a lower pressure. 研制了适用于香茅醛在较低压力下选择加氢制备香茅醇的改性骨架镍催化剂，香茅醛的转化率达99。
- The novel had an enormous vogue in the 1930's. 这本小说在三十年代曾广为流传。
- He earned four A's in the final examinations. 他期末考试四门功课得优。
- What is more, the way to preparation and regeneration of Raney nickel catalyst is studied tentatively. 同时，本文也对雷尼镍催化剂的制备和再生活化等工艺条件进行了探索性研究。
- The Beatles were the pop idols of the 60's. 披头士乐队是六十年代人们崇拜的偶像。
- He returned to the fold at his 80's. 他在八十高龄又恢复原来的宗教信仰。
- She has an amused twinkle in her eye(s). 她高兴得双目熠熠发亮。
- Driving with worn tread(s) can be dangerous. 轮胎胎面磨损的汽车开著有危险。
