ballast-tamper
常见例句
- electric ballast tamper
电动石碴夯实机 - Pig iron used as permanent ballast.
压载铁做为永久性压舱物的生铁 - Please don't tamper with the clock radio.
请不要瞎弄那只收音机闹钟。 - The ship was furnished with ballast.
船上装了压舱物。 - hydraulic ballast tamper
液压捣固机 - ballast tamper
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