英语语法分析

The current products contain a large amount of methylbenzene and are poisonous.

现有产品含有大量的甲苯，具有毒性。

METHODS Headspace GC was used to determine the skellysolve B, benzene, methylbenzene, styrene in Peristrophe baphica extraction.

方法采用顶空气相色谱法对树脂残留物正己烷、苯、甲苯、二甲苯、苯乙烯进行检测。

Objective To establish a mouse aplastic anemia model by using cyclophosphamide and methylbenzene, and research its pathomorphology.

目的以环磷酰胺和甲苯联合应用的方法建立小鼠再生障碍性贫血动物模型，并进行病理学观察。