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

plumb bob

noun

A bob of lead or other heavy material forming the weight of a plumb line.Here, three metal rods ran across a corner of the gallery, each supporting a large pulley wheel and a piece of canvas strap to which were attached a plumb bob and a weight....

More than 2,000 years ago the Mayans used plumb bobs and chalk lines in building carved columns so finely that a row of hundreds of these would disappear behind the first one.
They include a mason's kit with various shapes for cutting limestone and finishing masonry work and mortar; a plumb bob fastened from limestone; and tools for cutting, scraping, chiseling, planing, and sawing wood.

单词	plumb bob
释义	plumb bob noun A bob of lead or other heavy material forming the weight of a plumb line.Here, three metal rods ran across a corner of the gallery, each supporting a large pulley wheel and a piece of canvas strap to which were attached a plumb bob and a weight.... More than 2,000 years ago the Mayans used plumb bobs and chalk lines in building carved columns so finely that a row of hundreds of these would disappear behind the first one. They include a mason's kit with various shapes for cutting limestone and finishing masonry work and mortar; a plumb bob fastened from limestone; and tools for cutting, scraping, chiseling, planing, and sawing wood.
随便看	misthought misthrow mistily mistime mistimed mistiness Mistissini mistitle mistless mistle thrush mistletoe mistletoebird mistletoe cactus mistletoe thrush mistlike mist maiden mist-net mist-netter mistook mist propagation mist propagator mistrack mistracking mistral mistranslate