spacing
【机械工程】介体, 带有松散间隔滚珠的滚珠轴承
spacing body ball bearing with loose spacing bodies
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相关词条
interplanar spacing
tray spacing
row spacing
positive feed with pawl and ratchet of character-spacing mechanisms inselective printers
track spacing
plant spacing
spacing discharge tube, spacing of electron-optical or ion-optical arrangements