Finally the structures were released in a 49 % HF etch.最后在49%F中腐蚀形成这些结构.More often , all of the materials etchant have a finite etch rate.剂中的材料都具有一定的刻蚀速率.Can some one suggest a suitable etch or sequence of etches to achi...
More often, all of the materials exposed to the etchant have a finite etch rate.通常, 所有暴露在刻蚀剂中的材料都具有一定的刻蚀速率.Hydrofluoric acid of Porcelain Etchant and phosphoric acid of UNI - ETCH are severe eye and tissue irritants.瓷酸蚀剂...
彭德古德把旅行拖车里的沙子铲了出来。Pendergood had shovelled the sand out of the caravan.开走之前，再检查一下拖车的挂钩。Before driving away, re-check the trailer coupling.拖着一辆载有小船的拖车的小汽车a car towing a trailer with a boat on it...
They had to change the date fixed to Feb. 28 th.他们只得把约期改到2月28日.We'll change the date to Feb.28 th.我们将把日期改到2月28日.Feb import dual - use monitoring system is linear and IC packaging.电测系统选用进口双列封装的线性和集成电路....
His cousin was soon cursing luridly.他的表弟立刻用极其难听的脏话大骂起来。Sonny began beating the cowering Carlo with his fists, cursing him in a thick, rage - choked voice.桑儿一面用拳头打这个缩头缩脑的卡罗, 一面用他那气得上气不接下气的沙哑的声音咒骂.The crewmen were cheerily...
Metastatic tumors to gingival from non - oral malignancies are very uncommon.摘要从 非 口腔部位的恶性肿瘤转移至齿龈是非常罕见.Objective To study the distribution of the chromatic value of gingival porcelains.目的了解临床常用牙龈瓷的颜色参数.Gingival margins c...