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The progresses in the synthesis study of isoamyl isovalerate at home and abroad were reviewed.综述了国内外对异戊酸异戊酯的合成研究的进展情况.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正...
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机遇游戏...
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Four nozzles , canted outboard, split the exhaust of the solid rocket motor into four equal tails.四个向外倾斜的喷管把固体火箭发动机的排气流分成四个相等的尾巴.In practice, the turbine disc and the nozzles are fitted into a casing.实际上, 涡轮圆盘和喷嘴是装在机壳里的....
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“密码化”的英语可以翻译为：encipherment ...
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Sonar, Kipper and Bottlenose were waiting for Seaweed.声纳 、 吧嗒、槌等候海藻.I like to eat kipper.我喜欢吃熏鱼....
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“滤水池”的英语可以翻译为：setting basin，water filter，filter bed ...
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“战士”的拼音为：zhàn shì...
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“加”的英语可以翻译为：add，plus，increase，augment（姓氏） a surname，adding ...
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n.奉承，巴结v.抹黄油于…上( butter的现在分词 )...
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v.自动保存...
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In most of the residence halls we visited, rules prohibit disorderly conduct.在我们走访的学生宿舍里，大多明令禁止胡作非为。Prohibit the sale of alcoholic beverages.禁止出售含酒精的饮料.Legislation can quickly prohibit pesticide use.法律很快就会禁止使用杀菌剂....
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amalgamate的现在完成时为：amalgamated...
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adj.顽固的，顽强的...
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Numerically, there are a lot of young people involved in crime.从数字上看，有很多年轻人犯罪。His men were far superior numerically.他手下的士兵在人数上占了绝对优势。The enemy were numerically superior, ie There were more of them.敌人在数量上占优势....