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...
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...
He delivered his words in slow, measured cadences.他讲话缓慢而抑扬顿挫、把握有度。He recognized the Polish cadences in her voice.他从她的口音中听出了波兰腔。Churchill's cadences began to roll out of the short - wave radio.短波电台里开始传出邱吉尔那抑扬顿挫的声调....
When dogmatism turns into its opposite, it becomes either Marxism or revisionism.教条主义走向反面, 或者是马克思主义,或者是修正主义.The theory of the dictatorship of the proletariat is the quintessence of Marxism.无产阶级专政的理论是马克思主义的精髓.Marxism poss...