Chemical

(noun.) material produced by or used in a reaction involving changes in atoms or molecules.

(adj.) relating to or used in chemistry; 'chemical engineer'; 'chemical balance' .

(adj.) of or made from or using substances produced by or used in reactions involving atomic or molecular changes; 'chemical fertilizer' .

手打:露西娅

• For example, if the sun's rays fall upon silver chloride, a chemical action immediately begins, and as a result we have two separate substances, chlorine and silver. 伯莎M.克拉克. 科学通论.
• The art of manufacturing gems synthetically, that is, by the combination of chemical elements present in the real stone, has reached a high degree of success. 佚名. 神奇的知识之书.
• In the following year Davy reported other chemical changes produced by electricity; he had succeeded in decomposing the fixed alkalis and disc overing the elements potassium and sodium. 李贝. 西洋科学史.
• Alexander Bain of Edinburgh in 1845-46 originated the modern automatic chemical telegraph. 威廉·亨利·杜利特. 世纪发明.
• There were the chemical corner and the acid-stained, deal-topped table. 阿瑟·柯南·道尔. 福尔摩斯归来记.
• The main building was divided into five chief divisions--the library, office, machine shops, experimental and chemical rooms, and stock-room. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• So, when I am after a chemical result that I have in mind, I may make hundreds or thousands of experiments out of which there may be one that promises results in the right direction. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• In this case, chemical action is expended in heat rather than in the production of electricity and the liquid becomes hot. 伯莎M.克拉克. 科学通论.
• One of the best-known cells in which weakening of the current is prevented by chemical means is the so-called gravity cell. 伯莎M.克拉克. 科学通论.
• The latest improvement in chemical matches is the Vesta, which consists of small wax, or stearine tapers, with an igniting composition at the end, consisting of chlorate of potass and phosphorus. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• The tremendously complex nature of the chemical reactions which take place in the lead-acid storage battery also renders it an easy prey to many troublesome diseases. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Chemical analysis shows oleomargarine to have substantially the same constituents and in almost the identical proportions of pure butter. Edward W. Byrn. 十九世纪发明进展.
• When chemical action between the water and carbide has ceased, and gas bubbles have stopped forming, slaked lime is all that is left of the dark gray crystals which were put into the water. 伯莎M.克拉克. 科学通论.
• Holmes was seated at his side-table clad in his dressing-gown, and working hard over a chemical investigation. 阿瑟·柯南·道尔. 福尔摩斯回忆录.
• The hydrogen formed by the chemical action of the dilute sulphuric acid on the zinc moves toward the copper electrode, as in the simple voltaic cell. 伯莎M.克拉克. 科学通论.
• George Pullman, who then had a small shop at Detroit and was working on his sleeping-car, made Edison a lot of wooden apparatus for his chemicals, to the boy's delight. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• And so much harm has been done by food preservatives that the pure food laws require that cans and bottles contain a labeled statement of the kind and quantity of chemicals used. 伯莎M.克拉克. 科学通论.
• Edison's chief chemist says: We left no stone unturned to find a way of making those chemicals so that they would give the highest results. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• That let all the fumes and chemicals out and overcame the firemen; and there was the devil to pay. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Medieval Europe used various forms of water pumps, and it was not until the opening of the nineteenth century that chemicals were used to combat fire. 佚名. 神奇的知识之书.
• Without his scrapbooks, his chemicals, and his homely untidiness, he was an uncomfortable man. 阿瑟·柯南·道尔. 福尔摩斯归来记.
• Rain water, coming as it does from the clouds, is free from the chemicals gathered by ground water, and is hence practically pure. 伯莎M.克拉克. 科学通论.
• Tons of chemicals and hundreds of pine trees are used yearly in the making of matches, and many hundreds of millions of them are daily consumed. 威廉·亨利·杜利特. 世纪发明.
• Benzoate of soda, and salicylic acid are the chemicals most widely employed for this purpose, with coal-tar dyes to simulate the natural color of the fruit. 伯莎M.克拉克. 科学通论.
• Objects, such as furniture, which cannot be boiled, are disinfected by the use of any one of several chemicals, such as sulphur, carbolic acid, chloride of lime, corrosive sublimate, etc. 伯莎M.克拉克. 科学通论.
• Many other chemicals can be used, however, for making the fluorescing screen, such as the sulphides of calcium, barium and strontium. Edward W. Byrn. 十九世纪发明进展.
• The evil results of an accident with acid can be lessened if we know just what to do and do it quickly, but for this we must have a knowledge of bases, the second group of chemicals. 伯莎M.克拉克. 科学通论.
• Thus supporting himself, he felt entitled to spend any other profit left over on chemicals and apparatus. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• They contained the chemicals with which he was constantly experimenting. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• But the chemicals which destroy bacteria frequently injure the consumer as well. 伯莎M.克拉克. 科学通论.

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