1.A survey of the health condition of 308 cases of workers exposed to benzene, toluene, xylol and mixed derivatives of benzene is presented.

本文報告了308例苯、甲苯、二甲苯及混合苯作業(yè)工人的健康狀況調(diào)查結(jié)果。

2.A survey of the health condition of 308 cases of workers exposed to benzene, toluene, xylol and mixed derivatives of benzene is presented.

本文報告了308例苯、甲苯、二甲苯及混合苯作業(yè)工人的健康狀況調(diào)查結(jié)果。

3.Diarylethane was synthesized continuously from a mixture of styrene and xylol with synthetic SiO_2-Al_2O_3 as catalyst.

苯乙烯和混合二甲苯的混合物，在合成硅鋁酸催化劑存在下連續(xù)合成二芳基乙烷。

4.The Mass transfer rate for the Oxidation of xylol in air by a monolithic Catalyst was experimentally determined.

實驗測定了在蜂窩型催化劑上氧化空氣中二甲苯的傳質(zhì)速度。