Tsis ntev los no, peb tus engineer tau tsim ib lub lift tshiab. Nws yog lub lift tsheb lossis lub lift thauj khoom. Nws siv ob txoj hlua thiab saw hlau los nqa platform. Tau kawg, nws yog hydraulic tsav. Qhov siab tuaj yeem hloov kho, siab tshaj 12m. Thiab nws siv cov qauv ruaj khov.
Txais tos kom tau txais cov ntaub ntawv ntxiv.
Lub sijhawm tshaj tawm: Tsib Hlis-18-2022