英语释义

• a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins

片语

benzofuran resin古马隆树脂

cumarone benzofuran古马隆

Benzofuran neolignans苯并呋喃类新木脂素

benzofuran-indeneresln古马隆

solid benzofuran固体古马隆

benzofuran compound芳并呋喃化合物

benzofuran neolignan苯并呋喃新木脂素

benzofuran derivative苯并呋喃衍生物

coumarone香豆酮；[有化] 苯并呋喃；氧茚

benzofuran compounds苯并呋喃类化合物

英汉例句

• several new bis (1,2-dicarbonyl) compounds containing benzofuran or benzothiophene ring have been synthesized and identified by elemental analysis and infra red spectroscopy.

  本文首次合成了几种含苯并呋喃苯并噻吩环的新的芳香族四羰基化合物，并对它们进行了元素分析和红外光谱测定。

• the invention discloses a preparation method of a benzofuran ketones compound containing indoles substituent groups.

  一种含吲哚类取代基的苯并呋喃酮类化合物的制造方法。

• processes for production of benzofuran are introduced and analyzed in this article. a scheme, in which vacuum distillation is used, is put forward to improve the old processes.

  介绍和分析了三种典型的苯并呋喃的生产工艺过程，并提出了对传统流程进行改进的方案，通过实验证明了减压精馏过程应用于苯并呋喃生产的可行性和优越性。

• experiments are undergone to extract colorants from naturally colored cotton fiber. results show that natural colorants are water or alcohol soluble substances with 2-benzyl benzofuran structure.

  通过提取和测试天然彩色棉的色素，结果表明，天然色素系水溶性或醇溶性多酚类物质，具2苯基苯并吡喃的结构；