Not recommended for exposure to ketones and brake oil.
不建议暴露于酮类及刹车油中。
Ludwig said ketones seem to have unique effects on the brain.
路德维希博士说，酮似乎对大脑有种特殊影响。
It is a kind of important reaction to prepare ketones through gas-solid catalysis.
气固催化法制备酮类化合物是一类重要的反应。
It is a kind of important reaction to prepare ketones through gas-solid catalysis.
气固催化法制备酮类化合物是一类重要的反应。
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