比如说,某些蜂蜜在被稀释时能产生过氧化氢,这一物质具有抗菌的功效,但是曼努卡蜂蜜能产生一种不同的抗菌物质,丙酮醛。
For example, some honeys produce hydrogen peroxide when diluted - that's what gives them antimicrobial properties - but Manuka honey produces a different antimicrobial substance called methylglyoxal.
但是是否任何类似(丙酮和过氧化氢是炸弹的主要成份)的行为都要报告给执法人员,由其对这些行为进行评估呢?
But should any of these activities (acetone and hydrogen peroxide can be components for explosives) be reported to and evaluated by law enforcement officials?
以叔丁基过氧化氢(TBHP)为氧化剂,四丁基溴化铵(TBAB)为相转移催化剂,有效地将乳酸乙酯氧化合成丙酮酸乙酯,产品纯度达98%以上。
Ethyl pyruvate was synthesized from ethyl lactate using TBHP as oxidant and TBAB as phase transfer catalyst, the purity of product was over 98 %.
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