词汇	gas-tight piston ring
释义	gas-tight piston ring 活塞压环
随便看	hot-dip compound hot-dip galvanealing hot dip galvanised hot dip galvanised process hot dip galvanising plant Hot dip galvanization hot-dip galvanization hot-dip galvanization strip hot dip galvanize hot-dip galvanized rebar hot dip galvanized sheet Hot dip galvanized steel Hot-dip galvanized steel hot dip galvanized steel pipe hot dip galvanized steel sheet hot-dip galvanized steel wire hot-dip galvan-ized steel wire hot dip galvanized strip Hot-dip galvanized zinc hot-dip galvanized zinc coating hotdip galvanizing hot dip galvanizing hot-dip galvanizing hot -dip galvanizing hot dip galvanizing annealing furnace