加一滴甲苯作为防腐剂。
加一滴甲苯作为防腐剂。
研究了一种制备对氟甲苯的新工艺。
目的评价氨甲苯酸注射液的安全性。
Objective To study the security of Aminomethylbenzoic acid Injection.
表6回收甲苯对反应的影响。
现有产品含有大量的甲苯，具有毒性。
The current products contain a large amount of methylbenzene and are poisonous.
颜料黄1和经甲苯处理的C。
甲苯是人的生殖毒素。
前言： 目的：合成2-对甲苯基苯甲酸。
然后，将工业品二甲苯放入瓶中，使达到瓶口。
Thereafter the bottle is filled to the lip with commercial grade xylene.
以重质洗油为原料，二甲苯为溶剂精制工业芴。
The technical fluorene has been refined from the heavy wash oil with xylene.
在气相光催化甲苯的连续系统中，研究湿度对催化剂活性的影响。
The effects of humidity on the activity were studied in a continuous system.
四甲苯催化制备1,2,4,5 -四甲苯反应体系的气相色谱分析。
Gas Chromatography Analysis of Reaction System of Preparing 1, 2, 4, 5-tetramethylbenzene.
根据NASA的相关研究，证明了蜘蛛草可以除去空气中的甲醛、二甲苯和甲苯成分。
In NASA's study, they were shown to get rid of formaldehyde, xylene and toluene.
根据NASA的相关研究，证明了蜘蛛草可以除去空气中的甲醛、二甲苯和甲苯成分。
In NASA's study, they were shown to get rid of formaldehyde, xylene and toluene.
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