| 单词 | eutectic |
| 例句 | Instead, it would use things called deep eutectic solvents to dissolve wood and separate out the lignin. The paper industry and climate change: Roll on the green revolution 2013-11-28T15:58:37Z When the eutectic temperature is reached there is a second F.P. or arrest at which the whole of the remaining liquid solidifies. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z At the peak temperature, it continued, the core experienced “melting of uranium-zirconium eutectics,” a reactor alloy. From Far Labs, a Vivid Picture Emerges of Japan Crisis 2011-04-02T19:55:19Z A eutectic mixture results when two components solidify simultaneously at a definite temperature. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. It will be seen at once by this definition that the temperature of liquefaction of a eutectic substance is lower than the temperature of liquefaction of either or any of the constituents of the mixture. Scientific American Supplement, No. 508, September 26, 1885 The first case comprises the fusion of pure substances, and that of eutectics, or cryohydrates; the second is the general case of an alloy or a solution. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The eutectic F.P. is of longer duration, but still at the same temperature. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z From this diagram we should be led to expect a eutectic mixture, since the curve dips below a horizontal line passing through the melting-point of the more fusible of its constituents. Scientific American Supplement, No. 508, September 26, 1885 Such a mixture has a constant melting point and because of this and also because both solid and liquid phases have the same composition, eutectic mixtures were formerly looked upon as compounds. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. And, further, it is plain that those substances only can be eutectic which we can obtain both as liquid and solid, and hence the property of eutexia is closely connected with solution. Scientific American Supplement, No. 508, September 26, 1885 Although many fusible alloys have been long known, I believe no true eutectic metallic alloy had been studied until Dr. Guthrie6 worked at the subject, employing the same methods as with his cryohydrates. Scientific American Supplement, No. 508, September 26, 1885 The alloy corresponding to the cryohydrate, possessing the lowest melting point, is called the eutectic alloy, as it is most easily cast and worked. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z If this solid be removed as it forms, the temperature gradually falls until a fixed point is reached, at which the eutectic alloy solidifies. Scientific American Supplement, No. 508, September 26, 1885 We have already seen with salt eutectics that, given the curve of melting-points of a mixture in various proportions, we may predict the existence, composition, and melting-point of the eutectic alloy. Scientific American Supplement, No. 508, September 26, 1885 On remelting, the temperature of solidification is found to be quite fixed, and the mixture is evidently eutectic. Scientific American Supplement, No. 508, September 26, 1885 As a matter of course, the same thing holds good for metallic eutectics. Scientific American Supplement, No. 508, September 26, 1885 For an alloy of the composition of the eutectic itself there is no arrest until the eutectic temperature is reached, at which the whole solidifies without change of temperature. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z This, therefore, is the composition of the eutectic alloy, and it finds its place naturally on the curve given in Fig. Scientific American Supplement, No. 508, September 26, 1885 This is the only case in which a eutectic mixture is possible, and it is, of course, found at the lowest point of the curve. Scientific American Supplement, No. 508, September 26, 1885 Or, in other cases, we may predict from the curve of melting-points that no eutectic alloy is possible. Scientific American Supplement, No. 508, September 26, 1885 |
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