變速的英文：
speed change
gear shift

參考例句：
  • slewing range
    (步進電機的)變速范圍
  • Multi-speed bicycle
    變速自行車
  • Alternating slow-fast set
    變速游
  • The variable-speed electric fan makes you feel carefree, cool and refreshed.
    變速電風扇，帶給您逍遙清涼。
  • You may have to continue to hold the shift lever in an "overshift" until the shift is complete.
    也許您必須扳動變速桿并一直將其保持在“過變速位置”，直到變速完成。
  • Hydrostatic wheel and travel drive with four-range infinitely variable speeds, anti-slip drive
    靜液壓全輪驅動，四檔無級變速，防滑驅動。
  • With stepless speed regulator, you may control this vehicle with ease.
    本車裝有無級變速操縱桿，包您操縱自如。
  • A synchronous motor can be used to drive a fan through a variable-speed magnetic coupling.
    一個同步電動機能夠通過變速磁性聯(lián)軸帶動風扇。
  • It's a 1992 Mustang V6, two-door automatic.
    那是部1992年野馬六汽缸雙門自動變速汽車。
speed是什么意思：
n. 速度，速率；快速，迅速
v. 迅速前進，快行；促進；加速，使加速
  • The speed of a train differs greatly from the speed of an airplane
    火車的速度與飛機的速度大不相同。
  • The car is gaining speed.
    那輛轎車正在加速。
  • The worker is timing the speed of the machine.
    這名工人正在調整機器的速度。
change是什么意思：
n. 變化；交換，交替；零錢
v. 改變；交換，替換；兌換；更換
  • change a bed;change the baby.
    換床單；給嬰兒換尿布
  • We propose 'a change [making a change / to make a change / that a change should be made].
    我們建議應做一點改變。
  • The change of quantity can causes the change of quality.
    量變可以引發(fā)質變。
gear是什么意思：
n. 齒輪；傳動裝置；工具；裝置；變速箱（《變形金剛》）
v. （使）適應；使…準備好；開動
  • The rotation of this gear on a hub or shaft drives other gears.
    安裝在襯套或軸上的齒輪的旋轉帶動其它齒輪轉動。
  • leave a car in neutral gear
    讓汽車排擋置于空擋位置
  • worm and wheel steering gear
    蝸桿蝸輪轉向機構

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