Fine dry sand sprinkled on to a mating surface of a mould to prevent adhesion of the mould surfaces and of the sand in each half of the mould.
Mid 19th century; earliest use found in Charles Tomlinson (1808–1897), science teacher and writer.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。