1 Materials are handled intentionally and properly without causing unnecessary damage to them.
1 Materials are handled intentionally and properly without causing unnecessary damage to them.
有意识地,正确地处理物料,以免导致不必要的损坏.
1 Materials are handled intentionally and properly without causing unnecessary damage to them.
有意识地,正确地处理物料,以免导致不必要的损坏.