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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.

报导了通固体原作以制取α-萘醌,氢醌以及对应的醌氢醌剂,所有反应均在固体状态下进行.

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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.

着重介绍氢和羧酸作羟基剂,使苯酚羟基生成邻苯二酚和对苯二酚的研究开发进展。

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AEA, Aeacus, aebl, AEC, AE-cellulose, aechmea, Aechminidae, aecidiosorus, aecidiospore, aecidium,

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3G, 401(K), a,

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

她使用胡萝卜制成的一种面霜,化学物质对苯二酚。

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VOA常速英语_非洲

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

在医学上使用对苯二酚可以有效地治疗皮肤变。

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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.

皮肤美白产品经常使用高浓度的对苯二酚,这会导致皮肤问题,或与白化学品混合,从而产生毒性。

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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,禁令未能阻止走私对苯二酚产品公开销售。

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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对苯二酚生产和进口的决议。

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aeneolithic, aeneous, A-energy, aenescent, AENGV, aenigmatite, Aeolia, Aeolian, aeolian harp, aeolianly,

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3G, 401(K), a,
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