| 释义 |
ballast/ˈbæləst/ n. & v.●n. 1 any heavy material placed in a ship or the car of a hot-air balloon etc. to secure stability (船只、热气球车等上的)压载物，压舱物 2 coarse stone etc. used to form the bed of a railway track or road 道砟(碎石等) 3 a mixture of coarse and fine aggregate for making concrete 石砟 4 Electr. any device used to stabilize the current in a circuit 【电】镇流器 5 anything that affords stability or permanence 稳定力量，稳定因素 ●v. tr. 1 provide with ballast 装压舱物于 2 afford stability or weight to 使稳定 [16th c.: from Low German or Scandinavian, of uncertain origin] |