Shandong drake zus tau tej cov hlau hlau tensile kuaj tshuab yog tsuas yog siv rau steel hlau, hlau hlau, txhuas hlau, tooj liab hlau thiab lwm yam hlau, non-metallic cov ntaub ntawv nyob rau hauv lub kub ib puag ncig ntawm tensile, compression, dabtsi yog khoov, shear, tev, tsim kua muag, load thiab lwm yam static mechanical...
Nyeem ntxiv