Larsen steel ntawv pawg yog dab tsi? Nyob rau hauv 1902, ib tug German engineer hu ua Larsen thawj zaug tsim ib hom steel ntawv pawg nrog U zoo li tus ntoo khaub lig-section thiab locks ntawm ob hnub, uas tau ua tiav nyob rau hauv engineering, thiab hu ua "Larsen Sheet Pile" tom qab nws lub npe. Tam sim no...