1)half-hard rubber,半硬质胶2)semi-ebonite hose,半硬质胶管3)semi-hard,半硬4)semi-hard magnet,半硬磁5)(semi) hard process,（半）硬过程6)polyether polyol,半硬泡
用法例句
The polyether polyol PTMG,polyester polyol PPG and 4,4 -diphenylmethane diisocyanate MDI as the main raw material,water foaming agent to do with the production of a new two-step method semi-rigid polyurethane.
