In order to improve the mechanical properties of the para - aramid paper polyimideresin.对位芳纶纸基材料分子结构的刚性及纤维表面的惰性导致其机械力学性能较低.The sisal pulp and aramid fiber were chose to fabricate the wet paper - base friction materials.本...
凯茜是个很好的伙伴，我们亲如姐妹。Kathy is a great mate, we are like sisters.她的朋友凯斯（凯茜娃的简称）眼泪汪汪。Her friend Kes (short for Kesewa) was in tears.凯茜兴奋异常。Cathy was beside herself with excitement....
Brides'hands are painted with beautiful patterns in henna.新娘的手被指甲花染上漂亮的图案.After a half a month, henna has grown a foot higher.过了半个月, 指甲花长得有一尺高了.Evening Primrose Oil Aloe Vera , Henna Extract, Honey Extract, Wheatger...
Original plate: Relief printing plate produced bu 7 photomechanical etching as distinct from electrotyping.原身版: 用照相晒版蚀刻方法造成的凸版.有别于电镀版.The process of preparing a printing surface for electrotyping engraving on a wax - coa...