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Robust thiab txhim khu kev qha Drag Head rau Dredger
Raws li thawj qhov chaw ntawm kev sib cuag nrog cov av, lub taub hau rub yog qhov tseem ceeb heev rau tag nrho cov txheej txheem dredging. Peb cov kev paub ntau xyoo ua rau peb tsim cov kev daws teeb meem zoo tshaj plaws rub lub taub hau, uas muaj peev xwm rho tawm qhov siab tshaj plaws ntawm cov av hauv qab hauv lub sijhawm luv tshaj plaws thiab ntawm tus nqi tsawg.
