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- ballast tamping 石碴夯实工程
- Pig iron used as permanent ballast. 压载铁做为永久性压舱物的生铁
- The ship was furnished with ballast. 船上装了压舱物。
- The ballast placed in the ship can keep the ship steady. 放在船上的压舱物可以保持船的平稳。
- The ballast may be thrown out to make the balloon go higher. 沙袋可以拋掉以使气球飞得更高。
- The foundation becomes solid after tamping. 打夯以后，地基就瓷实了。
- Arc lamps require a current-limiting ballast. 弧光灯需要一个限流镇流器。
- In addition,ways of tamping is brought out. 在此基础上,提出了捣实的方法。
- Not stabilized or properly stabilized by ballast. 不稳定的未用压舱物稳住的
- Catch good team, tamp foundation. 抓好队伍，夯实基础。
- To fill(a railroad bed) with or as if with ballast. 铺沙石用或似用沙石铺（铁路路基）
- The rail beds well on the ballast. 铁轨在道碴上搁得很稳。
- The readiness of a vessel for sailing with regard to ballast, sails, and yards. 船的航行状态从船的压载、船帆和帆桁方面考虑看船的状况是否能够航行
- Do ballast lines pass through any cargo tanks? 有压载管穿过任意货舱吗?
- Are there anodes in the ballast tanks? 压载舱有阳极吗?
- Terminal box and ballast are fitted by customers. 接线盒、镇流器由用户选配。
- To stabilize or provide with ballast. 用压载物来稳定或支撑
- Pump out port No.1 ballast water overboard. 将左舷第1舱压载水排出船外。
- Collocate High efficient electronic ballast. 简介：配用高效电子镇流器。
- The__ maintains the ballast pumps. （三管轮）维修压载泵。
