phenol + be + noun phrase
phenol 指苯酚这种具体物质时通常用作不可数名词,不加冠词。
Phenol is a weakly acidic organic compound.
苯酚是一种弱酸性有机化合物。
酚;酚类化合物
苯酚;一类弱酸性有机化合物;分子含有一个或多个羟基;酚类;一种有毒的白色可溶性结晶酸性苯衍生物;用于制造业及作为消毒剂和防腐剂;内服有毒;石炭酸
any of a class of weakly acidic organic compounds whose molecules contain one or more hydroxyl groups
也常特指苯酚
苯酚
A caustic, poisonous, white crystalline compound, C6H5OH, derived from benzene and used in resins, plastics, and pharmaceuticals and in dilute form as a disinfectant and antiseptic; once called carbolic acid
一类弱酸性有机化合物;分子含有一个或多个羟基
any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups
酚类
Any of a class of aromatic organic compounds having at least one hydroxyl group attached directly to the benzene ring (or other aromatic ring)
一种有毒的白色可溶性结晶酸性苯衍生物;用于制造业及作为消毒剂和防腐剂;内服有毒
a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally
In chemistry class, we learned that phenol is used to make plastics and resins.
在化学课上,我们学到苯酚用于制造塑料和树脂。
用法提示:此处phenol为不可数名词,指苯酚这种有机化合物。
Some phenols occur naturally in plants and help protect them from insects.
一些酚类化合物天然存在于植物中,帮助植物抵御昆虫。
用法提示:此处phenols为复数形式,表示酚类化合物这一类别。
The lab technician handled the phenol carefully because it can irritate the skin.
实验室技术员小心地处理苯酚,因为它可能刺激皮肤。
用法提示:此处phenol为不可数名词,指具体的化学品苯酚。
phenol 指苯酚这种具体物质时通常用作不可数名词,不加冠词。
Phenol is a weakly acidic organic compound.
苯酚是一种弱酸性有机化合物。
a phenol 是可数用法,表示酚类化合物中的某一个具体种类。
A phenol contains one or more hydroxyl groups.
一种酚含有一个或多个羟基。
phenols 是复数形式,泛指酚类化合物这一类物质。
Phenols are a class of weakly acidic organic compounds.
酚类是一类弱酸性有机化合物。
多用于消毒、防腐等日常或化工语境,正式化学写作中通常用 phenol。
属于系统化学命名,日常英语和学习语境中不常用。
grammar · medium
易错句子Phenol is a class of organic compounds containing hydroxyl groups.
正确表达Phenols are a class of organic compounds containing hydroxyl groups.
表示“酚类”这一类别时,英文要用复数 phenols 作主语,系动词用 are;单数 phenol 专指苯酚(C6H5OH),不能指整个类别。
grammar · medium
易错句子Phenol compounds are found in many plants.
正确表达Phenolic compounds are found in many plants.
英语中“酚类化合物”是固定术语 phenolic compounds,需用形容词 phenolic 修饰 compounds;phenol 是名词,phenol compounds 不符合化学英语的规范搭配。
grammar · medium
易错句子The reaction introduces a phenol group into the molecule.
正确表达The reaction introduces a phenyl group into the molecule.
苯基(C6H5-)的英文是 phenyl(形容词/名词),而 phenol 是“苯酚”整个化合物;说“引入苯基”要用 phenyl group,不能用 phenol group。
phenol 指苯酚这种弱酸性化合物(C6H5OH),是完整的物质名称;phenyl 指苯基(C6H5-),是取代基,不能当作独立化合物。二者拼写相近,但 phenol 作名词,而 phenyl 多用于命名基团。
苯酚含羟基(-OH),呈弱酸性;苯是不含羟基的简单碳氢化合物,没有酚的弱酸性。两者中文名只差一个“酚”字,但结构和性质不同。
酚醛树脂
Phenol formaldehyde resin is widely used in adhesives and molded products.
酚醛树脂广泛用于粘合剂和模压制品。
酚红(pH指示剂)
Add a drop of phenol red to the culture medium to detect pH changes.
向培养基中滴加一滴酚红以检测pH变化。
酚系数(消毒剂效力指标)
The phenol coefficient compares a disinfectant's germicidal power with that of phenol.
酚系数将消毒剂的杀菌效力与苯酚进行比较。
稀苯酚溶液
A dilute phenol solution can be used as a mild antiseptic.
稀苯酚溶液可用作温和的防腐剂。
酚羟基
The phenol hydroxyl group makes the compound weakly acidic.
酚羟基使该化合物呈弱酸性。
酚类分子含有一个或多个羟基,这是酚的结构特征。
苯酚属于芳香族化合物,具有苯环结构。
苯酚可视为苯环上的氢被羟基取代后的衍生物。
苯酚与甲醛缩聚可生成酚醛树脂。
苯酚传统上可从煤焦油中提取。
Dictionary facts from ECDICT, WIKTIONARY.