Lub tuam txhab muaj lub tuam txhab tsim khoom lag luam, suav nrog cov neeg tsim qauv zoo nkauj, cov qauv tsim qauv thiab cov txheej txheem engineers, txhua tus tau sau ntau xyoo dhau los hauv kev lag luam kho vajtse qhov rooj xauv;

Txhua xyoo, 3-4 tus qauv tsim ntawm zinc alloy tuav yuav raug tso tawm; (Muaj 7-8 tus qauv qub txhua xyoo, thiab peb tsuas yog xaiv qee qhov los tso rau hauv kev ua lag luam), thiab cov kws tsim qauv tsim qauv yuav koom tes nrog cov neeg tsim qauv tsim los sib koom ua ke tsim cov khoom tshwj xeeb ntawm kev ua lag luam los ntawm kev txhim kho cov qauv; cov txheej txheem engineers yuav phim cov txheej txheem kev kho saum npoo raws li qhov xav tau ntawm cov khoom kom pom qhov zoo nkauj ntawm cov khoom;