从溶剂浓度的角度来看, 凹印的室内换气管理是必须的.From solvent concentration point of view, gravure micyoco pissed management is necessary.凹版印刷包括照相凹版,模型压印, 铜版凹印和移印.It includes gravure, die stamping copper - plate engraving and pad printing.图为该企...
他们实际上无力与实力雄厚的大公司抗衡.They were virtually impotent against the power of the large companies.在尼古拉·特斯拉的生活中存在着两股非常重要而且相互抗衡的力量。There were two central and countervailing forces in the life of Nikola Tesla.不要用你的意愿和我的抗衡.Do not opp...