常見例句electric ballast tamper 電動石碴夯實機Pig iron used as permanent ballast. 壓載鉄做爲永久性壓艙物的生鉄Please don't tamper with the clock radio. 請不要瞎弄那衹收音機閙鍾。The ship was furnished with ballast. 船上裝了壓艙物。hydraulic ballast tamper 液壓擣固機ballast tamper 擣碴機 返回 ballast-tamper