英语词汇“roof stringer”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	roof stringer
释义	roof stringer roof stringer [′rüf ‚striŋ·ər] (mining engineering) A lagging bar running parallel with the working place above the header in a weak or scaly top in narrow rooms or entries which have short life.
随便看	beam waist beam waveguide beam width beamwidth beam width error beam wind beam with pride beamy beamys bean bean, alan bean anthracnose bean aphid bean aphis be an apology for be a nasty piece of work bean bag beanbag bean bag cell beanbag gun beanbags bean ball bean-ball beanball bean balls

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