Txee ntsuas kev ntsuam xyuas
(1) Paub meej tias lub txee rau qhov chaw: txee tub rau khoom dav dav thiab qhov deb tshaj yog 42 ~ 43mm
* Piv txwv: txee dav 500mm
* Cov tub rau khoom yog 457 ~ 458mm
* Qhov chaw me me dhau, yooj yim los ua kev tsheb nqaj hlau.
* Dhau qhov dav heev, ib qho yooj yim kom ua rau tsis ua tiav ntawm txoj kev tsheb nqaj hlau thiab qhov ua tiav ntawm tus kheej
(2) Cov txee sab hauv qhov dav yuav tsum zoo sib xws rau txhua txoj kev.
(3) Lub tso hauv qab tsis pub tshaj 13mm
(4) Cov tub rau khoom yuav tsum yog cov khoom sib dhos zoo nkauj.
(5) Tub rau khoom hauv qab yuav tsum teeb tsa nruj rau tub rau khoom vaj huam sib luag pem hauv ntej.
* Kev tsis sib haum ntawm lub txee rau sab hauv qhov dav thiab qhov dav ntawm qhov ntev yuav muaj qhov tsis zoo rau thawb qhib kev ua haujlwm.
* Cov tub rau khoom tsis raug rau pem hauv ntej kev teeb tsa tseem yuav muaj qhov tsis zoo los thawb qhib txoj haujlwm.
Kev Ntsuas Tus Kheej
(1) Lub txee thiab tub rau khoom yuav tsum yog cov duab plaub zoo meej, xyuas kom meej tias lawv yuav tsis nyob hauv pob zeb diamond lossis trapezoid cov duab.
(2) Txheeb xyuas qhov sib xws ntawm lub chaw sab (tshem tawm), qhov tob, thiab qib sib luag yog qhov sib txawv ntawm sab xis thiab sab laug.
(3) Xyuas kom lub tshuab kaw khoom kom raug ntsia kom raug.
(4) Xyuas kom meej qhov tub rau khoom qhov ntev teev hauv qab no yog qhov tseeb.
Cov ntawv rau kev teeb tsa
Xyuas kom meej cov tub rau khoom lub cev zoo li ntseg. Nws tsis tuaj yeem yog pob zeb diamond trapezoidal lossis distorted!
Ua kom lub chaw tog, qhov tob ntawm ob sab yog xwm yeem.
Nco ntsoov tias qhov chaw teeb tsa lossis lub txee rau ntawm thaj chaw tiaj.
Xyuas kom cov ua ntej tso tau raug teeb tsa kom raug.
Xyuas kom meej cov tub rau khoom qhov ntev, lub thawb tom qab xauv lub qhov, sab hauv tub rau khoom qhov dav, thiab cov tub rau khoom qias hauv qab yog qhov tseeb.
Lub sijhawm tshaj tawm: Lub Yim Hli-17-2020