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

middle oil n. Oil Industry a fraction that comes off at intermediate temperatures (about 200° to 250°C) in the distillation of coal tar and is rich in naphthalene.

ΚΠ

1890 Webster's Internat. Dict. Eng. Lang. at Middle Middle oil, that part of the distillate obtained from coal tar which passes over between 170° and 230° Centigrade.

1910 Encycl. Brit. VI. 597/2 The next fraction is the ‘middle oil’ or ‘carbolic oil’, of specific gravity 1·01, boiling up to 240° C; it contains most of the carbolic acid and naphthalene.

1964 N. G. Clark Mod. Org. Chem. xviii. 372 Middle oil. This fraction is rich in tar ‘acids’, tar bases, and naphthalene.

单词	middle oil
释义	> as lemmas middle oil middle oil n. Oil Industry a fraction that comes off at intermediate temperatures (about 200° to 250°C) in the distillation of coal tar and is rich in naphthalene. ΚΠ 1890 Webster's Internat. Dict. Eng. Lang. at Middle Middle oil, that part of the distillate obtained from coal tar which passes over between 170° and 230° Centigrade. 1910 Encycl. Brit. VI. 597/2 The next fraction is the ‘middle oil’ or ‘carbolic oil’, of specific gravity 1·01, boiling up to 240° C; it contains most of the carbolic acid and naphthalene. 1964 N. G. Clark Mod. Org. Chem. xviii. 372 Middle oil. This fraction is rich in tar ‘acids’, tar bases, and naphthalene. extracted from middleadj.n. < as lemmas
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