four-speed

基本解释

• adj.四速

同根派生

英汉例句

• By applying a mathematical transform to the coupling control equations about the phonon field and phason field, two standard wave equations and four speeds of wave are founded.
  考虑一维准晶体制备的杆的纵向波动问题,对声子场和相位子场相耦合的控制方程进行数学变换,得出2个标准的波动方程和4种波速。
• Power Train The ZF electro-hydraulic shift transmission incorporated has four speeds forward and three reverse, and gear "kick-down" (KD) function with operational easy and efficiency.
  变速系采用ZF电液换档前四后三变速箱,具有自动档位切换开关(KD键功能),操纵简便,工作效率高;
• The speed of sound in water is about four as great as in air.
  声音在水中的速度是空气中的四倍左右
• It is clear to all of us that two plus two is four.
  二加二等于四对我们大家都很清楚。
• He wove four plots together into a novel.
  他把四条情节编成一部小说。