有奖纠错
| 划词

Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍用过氧化氢和过氧化羧酸作基化剂,使基化生成的研究开发进展。

评价该例句:好评差评指正

This paper intends to report three experimentally simple preparations of naphthoquinone, hydroquinone and the corresponding mixed quinhydrone,all redox chemistry being carried out in the solid state.

报导了通过固体氧化还原作用以制取α-萘醌,氢醌以及应的醌氢醌试剂,所有反应均在固体状态下进行.

评价该例句:好评差评指正

用户正在搜索


manganmuscovite, mangano-anthophyllite, manganocalcite, manganochromite, manganoconiosis, manganoferrogehnite, manganolangbeinite, manganolanqbeinite, manganolite, manganomelane,

相似单词


3G, 401(K), a,

声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。

VOA常速英语_非洲

When used medically, hydroquinone can be an effective treatment for skin discoloration.

在医学上可以有效地治疗皮肤变色。

评价该例句:好评差评指正
VOA Special 2014年7月合集

She uses a cream that is made from carrots and not the strong chemical, hydroquinone.

胡萝卜制成的一种面霜,不含强化学物质

评价该例句:好评差评指正
VOA常速英语_非洲

Critics point out the ban have failed to stop smuggled hydroquinone products from being sold openly.

批评人士指出,禁令未能阻止走私产品公开销售。

评价该例句:好评差评指正
VOA常速英语_非洲

The East African Legislative Assembly last week passed a resolution on the region-wide ban of hydroquinone's manufacture and importation.

上周,东非立法会议通过了一项关于在整个地区禁止生产和进口的决议。

评价该例句:好评差评指正
VOA常速英语_非洲

Skin whitening products often use high concentration of hydroquinone which can cause skin problems or mix with other bleaching chemicals become toxic.

皮肤美白产品经常高浓度的,这会导致皮肤问题,或与其他漂白化学品混合,从而产生毒性。

评价该例句:好评差评指正

用户正在搜索


manganous, manganoxyapatite, manganpectolite, mangansmithsonite, mangan-uralite, manganvoelckerite, mangan-voltaite, manganwollastonite, mangcorn, mange,

相似单词


3G, 401(K), a,
  • 微信二维码

    关注我们的微信

  • 手机客户端二维码

    下载手机客户端

赞助商链接