同义词
1)barrier guard,防护装置罩2)guard,shroud,protecting collar,protective casing,protection casing,protective shelter, protector, shutter,hood,protective cover,safty guard protecting casing,protection casing,fender,防护罩，防护装置，防护3)protector,防护罩，保护装置;防护剂4)guard,防护器［罩，装置］5)guard; safety guard,防护装置;保护罩;保护网6)vibration damper guard,减振器防护罩[装置]
