单词 | rolamite |
释义 | ro·la·mite ![]() n. A mechanism consisting of two or more hard cylindrical rollers with a flexible nonstretching band looped around them, so that the rollers move against each other with very little friction. [ROL(L) + -amite, of unknown origin.] ![]() When rotated as indicated in the top illustration, the rollers and metal strip will move to the right. |
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