| 单词 | top tube |
| 释义 | > as lemmastop tube top tube n. the uppermost bar of a bicycle frame, esp. the horizontal bar of a diamond frame. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > vehicle propelled by feet > [noun] > cycle > parts and equipment of cycles > frame and parts of frame1869 fork1871 headpiece1877 head1881 frameset1899 dropout1923 crossbar1966 1885 Bicycling World 13 Feb. 245/2 From the centre of the top tube..a large steel tube extends forward, sloping towards the ground at a considerable angle, and then with a graceful turn, curving up over the steering wheel and terminating with the steering centres of a Humber head. 1917 Cycling Man. 2 Diamond frame, with horizontal top tube. 2014 Cycle Sport Oct. 110/3 Further up the chain, bikes have morphed into more rideable machines. Top tubes have got shorter, head tubes have got longer. < as lemmas |
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