宣传折页是PDF格式的。The leaflet is in PDF format.但由于折刀的往复运动, 造成折页速度较慢 、 维修困难.However, as the SAF reciprocating motion, resulting in the hinge - slow, maintenance difficulties.定量较重和较轻的纸都必须采用较低的 折页 速度.Quantitative heavy and lighte...
And then, unaccountably, she giggled.接着,她莫名其妙地咯咯笑了起来。"I beg your pardon?" she giggled.“您可以重复一遍吗?”她咯咯地笑着说。The girls giggled at the joke.女孩子们让这笑话逗得咯咯笑。...
The organic compounds are mainly benzoic acid anhydride , benzophenone, and so on.生成的有机化合物成分比较复杂,主要成分有苯甲酸酐、苯甲酮等.The uses and synthetic methods on 2,4 - Dichloro - 5 - Fluoro - benzoic acid were described in detail.简要概述了2...