单词	back pitch
释义	back pitch noun : the center-to-center distance between two parallel rows of rivets in riveted joints Word History First Known Use circa 1934, in the meaning defined above
随便看	pentacyclic pentad pentadactyles pentadactylism pentadactylisms pentadactyls pentadec- pentadeca- pentadecagon pentadecahydrate pentadecane pentadecyl pentadelphous pentadiene pentads pentaerythritol tetranitrate pentaga pentagon pentagon crab pentagonal pentagonally pentagonals Pentagonese pentagoneses pentagonoid

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