【电学】保留设备，铁路道钉（道钉）

retaining device railway spike (spike)

暂无补充释义。

相关词条

retaining wall

ejector pin retaining plate【机】;ejector retainer plate【机】

retaining powel

retaining ring

maximum value retaining circuit

retaining wire

crib retaining wall【建】

holding device for retaining sheets in registered position