The machine punches a row of holes in the metal sheet.
机器在金属薄板上冲出一排孔。
《牛津词典》
2
Structure of double-row blades can resolve the problem of mixing inefficient zone and improve mixing performance of interaction between machine member and concrete.
双排叶片结构较好地解决了搅拌低效区问题，改善了机构与混凝土相互作用的搅拌性能。
3
Tapered roller bearings for machine tools can be both radial and axial loads, double row tapered roller bearings can withstand two-way axial load.