etch

英 [et?] 美[?t?]

GRE低頻詞常用詞匯

第三人稱單數(shù):?etches;過去式:?etched;過去分詞:?etched;現(xiàn)在分詞:?etching;

1. "engrave by eating away the surface of with acids".
2. eat => etch.

etch 蝕刻

來自詞根ed, 吃，詞源同eat, edible.

etch: etch: [17] A line that has been etched has been literally ‘eaten’ away by acid or other corrosives. The word was borrowed from Dutch etsen, which in turn came from German ?tzen ‘corrode, etch’. This can be traced back to a prehistoric Germanic *atjan ‘cause to eat, feed’, a relation of *etan ‘eat’ (from which English gets eat).
=> eat
etch (v.): 1630s, "to engrave by eating away the surface of with acids," from Dutch etsen, from German ?tzen "to etch," from Old High German azzon "give to eat; cause to bite, feed," from Proto-Germanic *atjanan, causative of *etanan "eat" (see eat). Related: Etched; etching. The Etch A Sketch drawing toy was introduced 1960 by Ohio Art Company.

1. Hydrofluoric acid of Porcelain Etchant and phosphoric acid of UNI - ETCH are severe eye and tissue irritants.: 瓷酸蝕劑的氫氟酸和UNI-ETCH的磷酸是一種強(qiáng)烈的眼睛和組織的刺激物.

2. More often, all of the materials exposed to the etchant have a finite etch rate.: 通常, 所有暴露在刻蝕劑中的材料都具有一定的刻蝕速率.

3. We inspect etch channel density of the seed piece by piece.: 低腐蝕隧道:為確保低腐蝕隧道密度,我們對(duì)晶種的腐蝕隧道密度進(jìn)行逐塊檢測.

4. Finally the structures were released in a 49 % HF etch.: 最后在49%F中腐蝕形成這些結(jié)構(gòu).

5. More often , all of the materials etchant have a finite etch rate.: 劑中的材料都具有一定的刻蝕速率.