单词	job method
释义	job method 经分批法
随便看	ballasting weight ballast keel ballast lamp Ballast layer ballast leakage ballast leakage resistance ballast leg ballastless ballastless deck ballastless railway ballastless slab track ballastless track ballast-less track ballastless track construction ballastless track geometry size ballastless track high-speed railway ballastless truck ballastless turnout ballastles track ballast leveling device ballast level measurement ballast lighter ballast lighters ballast line ballast liquid