| 单词 | hair crack |
| 释义 | > as lemmashair crack hair crack n. Metallurgy = hairline n. 7. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > qualities of metals > [noun] > imperfections honeycomb1530 roll mark1894 hair crack1896 season crack1909 season cracking1910 snowflake1919 hairline crack1923 shrinkage cavity1923 clink1925 shatter crack1930 stretcher strain1931 pimpling1940 stringer1942 quench cracking1949 1896 Trans. Inst. Naval Architects 37 215 A 10 in. steel shaft..had shown fine hair cracks on the surface near the propeller. 1925 Jrnl. Iron & Steel Inst. 111 113 A defect known as snow-flakes or flakes (America), hair-cracks or hair-lines (Great Britain), Flocken (Germany), and cassures ligneuses (France), has received much attention among manufacturers and inspectors of alloy steel forgings. 1959 J. H. Thornley Found. Design & Pract. xiii. 103/2 The test for hair cracks consists merely of cleaning the pile and washing or immersing it in a tinted fluid. < as lemmas |
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