roll steel

1. \u0039\u0031\u0031\u67E5\u8BE2\u00B7\u82F1\u8BED\u5355\u8BCD

1. The implant consists of a series of plastic plates strung together with steel surgical wire, almost like a roll of wrapped coins.

2. roll steel是什么意思

2. Workers unload a roll of tin plate at a steel plant on the outskirts of Shanghai.