Lub rake hniav yog khoov ntawm lub caij nplooj hlav hlau hlau xaim. Hauv pem hauv ntej, nraub qaum, sab laug thiab sab xis rake hniav yog txuas nrog txhua lwm yam los ntawm lub duav nyob ua ib pawg hloov tau.
Nws yog qhov tsim nyog rau hauv av paving, xws li net paving. Nws yog qhov tsim nyog rau kev khawb hauv av tom qab plowing, thiab tseem tsim nyog rau cov pob kws thinning, piam thaj beet thiab lwm yam qoob loo. yub.
