TY  - GEN
TY  - GEN
T1  - 特殊钢
LA  - zho
UL  - https://kansalliskirjasto.finna.fi/Record/nelli06.110978984078567
KW  - Engineering : Civil Engineering
KW  - Material Science and Metallurgy : Metals, Minerals, Ores & Alloys
ER  -