Stencil manufacturing techniques include chemical etching, laser cutting and electroforming.钢网制作技术包括化学腐蚀, 激光切割和电铸.Original plate: Relief printing plate produced bu 7 photomechanical etching as distinct from electrotyping...
He stifled his temptation to take hold of Ivy and shake her.他压抑住想要抓住艾薇摇晃她的冲动。Rosanna stifled a huge yawn.罗莎娜想打个大哈欠，但强忍住了。He drank and stifled a belch.他喝水止住了嗝。...
The chromatin remodeling and histone acetylation were associated with transcription activation.真核基因活化与染色质的重建及组蛋白的乙酰化相关.In the reaction of acetylation and nitration 1,2 ? dichloroethane was used as solvent.在乙酰化、硝化反应中引入了1,...