英语词汇“pit prop”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pit prop
释义	pit prop noun A large wooden beam used to support the roof of a coal mine.It features pit props for roof beams, bricks from wash houses, a massive lump of coal for an alter and a half winding wheel on a wall.... The use of wood in the foundries and for pit props in the mines must have been considerable. Its cargo of pit props - used to hold up mine shafts - went into the sea and its crew overboard.
随便看	aestivator aestive aestivo-autumnal aestuous aesymnetic a.e.t. aet. aetat. aetatis aether aetherian aetherical aetherification aetherin aetherism aetheromania aetherous aethionema aethiops aethyliden aetiologic aetiological aetiologically aetiologist aetiology

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