| 单词 | wheel and axle |
| 释义 | > as lemmaswheel and axle (also †axis) c. wheel and axle (also †axis), as one of the mechanical powers: see power n.1 13. ΘΚΠ society > occupation and work > equipment > lifting or hoisting equipment > [noun] > others polancre1356 spindle1398 wrest1584 handscrew?1660 sea-crab1689 lewis1743 crab1753 wheel and axle (also axis)1773 tippler1831 fall1834 outrigger hoist1835 lewisson1842 power hoist1869 tipper1870 lifting screw1885 powerlifter1909 bucket chain1911 bracket-crab- society > occupation and work > equipment > machine > parts of machines > parts which provide power > [noun] > mechanical powers > one of screw1570 lever1648 wedge1648 peritrochium1704 wheel and axle (also axis)1773 1773 W. Emerson Princ. Mech. (ed. 3) 284 Wheel and axle, a machine to raise weights. One of the mechanic powers. 1799 J. Wood Princ. Mech. (ed. 2) iv. 63 The wheel and axle consists of two parts, a cylinder AB moveable about it's axis CD, and a circle EF so attached to the cylinder that the axis CD passes through it's center, and is perpendicular to it's plane. 1821 Turner's Easy Introd. Arts & Sci. (ed. 18) 85 In using the wheel and axis as the weight is raised, the rope coils round the axis and enlarges the diameter, hence the advantage of the power is diminished. 1862 H. Spencer First Princ. ii. iii. §56. 209 The advance from the lever to the wheel-and-axle is an advance from a simple agent to an agent made up of several simple ones. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。