| 单词 | etch pit |
| 释义 | > as lemmasetch pit etch pit n. ΚΠ 1950 Sci. News 15 67 The etch pits are seen to go down in a series of terraces like Dante's Inferno. 1959 Jrnl. Inst. Metals 87 376/1 A knowledge of the factors that influence the formation and distribution of etch pits is of primary importance, since these factors govern the validity of the etch-figure technique as a method of determining the distribution of dislocations in a material. < as lemmas |
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