密封式轴承

通用型塑料粉碎机，采用密封轴承，使轴承转动长时间保持良好；刀型设计合理，产品成粒均匀；刀座热缩处理，外形设计美观大方。

rechargeable sealed lead-acid battery

sealed bid

sealed tube

breathing air in sealed rooms

sealed-gage pressure transducer

rubber band sealed outer housing

hermetically-sealed

sealed contacts