英语词汇“fractional precipitation”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

2. Chemistry. Designating a process in which different fractions of a mixture are separated in consequence of their differing physical properties. So fractional crystallization, fractional distillation (see distillation n. 3), fractional precipitation, etc.

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fractional1857

1857 W. A. Miller Elements Chem. III. i. 9 This process of fractional distillation is well adapted to the separation of liquids.

1886 Chem. News 10 Sept. 131/1 Fractional crystallisation has yielded new results with didymium.

1886 Chem. News 10 Sept. 131/1 Working with the samarskite earths, fractional precipitation with oxalic acid separates first erbia, holmia, and thulia, then terbia, and lastly yttria.

1897 G. F. Becker in Amer. Jrnl. Sci. 154 257 (heading) Fractional crystallization of rocks.

1897 G. F. Becker in Amer. Jrnl. Sci. 154 258 The process..usually known as fractional crystallization..has been employed in the purification of compounds ever since chemistry was pursued.

1949 A. E. Alexander & P. Johnson Colloid Sci. II. xxvii. 797 Fractional solution may also be employed, a series of solvents of increasing solvent power being used to extract the unfractionated polymer.

1950 N. V. Sidgwick Chem. Elements I. 456 Fractional precipitation of the hydroxides is useful in isolating the very weakly basic Sc(OH)₃ or the strongly basic La(OH)₃.

1960 F. J. Turner & J. Verhoogen Igneous & Metamorphic Petrol. (ed. 2) iv. 85 The nature of the liquid fraction of a crystallizing magma at a given moment depends on..the degree to which fractional crystallization has already been effective.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XI. 118 Fractional distillation to remove iron, lead, and cadmium from crude zinc.

1968 J. M. Coulson & J. F. Richardson Chem. Engin. (ed. 2) II. xiv. 577 It is often possible to separate a mixture of two soluble salts by fractional crystallization.

单词	fractional precipitation
释义	> as lemmas fractional precipitation 2. Chemistry. Designating a process in which different fractions of a mixture are separated in consequence of their differing physical properties. So fractional crystallization, fractional distillation (see distillation n. 3), fractional precipitation, etc. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to named chemical reactions or processes > of or relating to fractionation fractional1857 1857 W. A. Miller Elements Chem. III. i. 9 This process of fractional distillation is well adapted to the separation of liquids. 1886 Chem. News 10 Sept. 131/1 Fractional crystallisation has yielded new results with didymium. 1886 Chem. News 10 Sept. 131/1 Working with the samarskite earths, fractional precipitation with oxalic acid separates first erbia, holmia, and thulia, then terbia, and lastly yttria. 1897 G. F. Becker in Amer. Jrnl. Sci. 154 257 (heading) Fractional crystallization of rocks. 1897 G. F. Becker in Amer. Jrnl. Sci. 154 258 The process..usually known as fractional crystallization..has been employed in the purification of compounds ever since chemistry was pursued. 1949 A. E. Alexander & P. Johnson Colloid Sci. II. xxvii. 797 Fractional solution may also be employed, a series of solvents of increasing solvent power being used to extract the unfractionated polymer. 1950 N. V. Sidgwick Chem. Elements I. 456 Fractional precipitation of the hydroxides is useful in isolating the very weakly basic Sc(OH)₃ or the strongly basic La(OH)₃. 1960 F. J. Turner & J. Verhoogen Igneous & Metamorphic Petrol. (ed. 2) iv. 85 The nature of the liquid fraction of a crystallizing magma at a given moment depends on..the degree to which fractional crystallization has already been effective. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XI. 118 Fractional distillation to remove iron, lead, and cadmium from crude zinc. 1968 J. M. Coulson & J. F. Richardson Chem. Engin. (ed. 2) II. xiv. 577 It is often possible to separate a mixture of two soluble salts by fractional crystallization. extracted from fractionaladj. < as lemmas
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