| 单词 | 缩管 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔drawtube〕A tube that slides within another tube, as in a small hand telescope.伸缩管：在另一管筒中滑动的管筒，如小型手持望远镜中的伸缩管美国传统〔pipe〕Metallurgy A cone-shaped cavity in a steel ingot, formed during cooling by escaping gases.【冶金学】 （铸件的）缩孔，缩管：铸件上的锥形孔，用来在冷却时排气用美国传统〔pipe〕Metallurgy To develop conical cavities during solidification.【冶金学】 形成缩管：凝固时形成缩孔美国传统〔slide〕He oiled the slide of his trombone.他给长号的伸缩管上油。韦氏高阶 |
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