| 单词 | ghost line |
| 释义 | > as lemmasghost line ghost line n. Metallurgy an indistinct line visible on a steel surface due to segregation of certain constituents, esp. phosphorus; cf. sense A. 19. ΚΠ 1905 Page's Weekly 29 Sept. 675/2 No steel maker could produce ingots absolutely free from ghost lines. 1926 Jrnl. Iron & Steel Inst. 113 109 When the ascending segregates are impeded by the growing crystals, they tend to elongate and form typical stringlike formations of segregate known as ‘ghost lines’. 2003 Ann. Bk. ASTM Standards: Iron & Steel Products (Amer. Soc. Testing & Materials) I. v. 9/1 Hairlines, stringers, shadow seams, ghost lines, etc., which appear after the axles have been finish machined and burnished or ground. < as lemmas |
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