Muaj ob peb lub raj xa dej uas muaj qhov ntev sib txawv ntawm txhua yam khoom siv, uas cov neeg tsim kho thiab cov neeg tsim khoom nyiam siv vim lawv muaj peev xwm hloov kho tau raws li kev tsim kho thiab kev tsim khoom. Hauv qab no yog cov qhov loj tshaj plaws uas cov neeg yuav khoom hauv cheeb tsam feem ntau xaj:
50 × 50 hli lub raj plaub fab: Zoo tagnrho rau kev tsim cov thav duab sib dua, cov khoom txhawb nqa, cov laj kab hlau thiab cov qauv hlau me me
100 × 100 hli lub raj plaub fab: Ib qho kev xaiv zoo tshaj plaws rau kev tsim cov qauv vaj tse, cov ncej txhawb nqa ntsug thiab cov qauv uas tuav tau cov khoom hnyav nruab nrab
150 × 150 hli lub raj plaub fab: Qhov kev xaiv zoo tshaj plaws rau cov khoom siv hnyav uas xav tau kev ua haujlwm hnyav zoo dua
200 × 200 hli lub raj plaub fab: Tsis tu ncua teev rau cov chaw ua haujlwm, cov chaw khaws khoom thiab cov qauv hlau hnyav
250 × 250 hli lub raj plaub fabTsim los rau cov haujlwm loj uas xav tau kev ruaj khov thiab kev ntseeg siab ntawm cov qauv
Nrog rau qhov ntau thiab tsawg no, cov neeg yuav khoom tuaj yeem nrhiav tau cov raj sib phim kom haum rau txhua qhov xwm txheej engineering, xws li cov haujlwm tsim khoom me me mus txog rau kev tsim kho kev lag luam tag nrho.
