Cov hnab ntim khoom yog qhov ntim tau ntim tau nrog cov nta xws li plua plav, noo - ntawv pov thawj, thiab kev tsim kho kom nyab xeeb. Lawv muaj lub zog txaus, yog ib qho yooj yim los thauj khoom thiab tsis tso, thiab haum rau kev tuav mechanized. Lawv muaj nyob rau hauv lub square thiab puag ncig lub hnab. Txoj kev Lifting suav nrog ob -} lossis plaub - nqa nyom. Cov ntaub ntawv tuaj yeem sab hauv lossis sab nraud txheej, lossis nruab nrog PE puab lub hnab kom ua tiav kev tiv thaiv.
Tuj lub hnab yog nquag ntim hauv ntim hauv hiav txwv, kev thauj mus los, thiab kev thauj mus los ntawm kev. Lawv siv dav siv, tshwj xeeb tshaj yog rau cov cement, noj, cov hmoov txhuv nplej siab thiab cov khoom siv ntxhia, thiab cov khoom tsim kev puas tsuaj xws li calcium carbide.
Lub hnab ntim yog ib txoj kev rau thauj cov khoom hmoov lossis cov khoom lag luam dhau mus deb. Cov hluav taws xob zoo li cas tuaj yeem tshwm sim thaum lub sijhawm cia, yog li cas peb tuaj yeem tiv thaiv kev puas tsuaj los ntawm hluav taws xob zoo li qub?
Thaum lub sijhawm ua yeeb yam, cov kev ntsuas tsim nyog yuav tsum tau coj los ua kom nrawm nroos hluav taws xob. Peb tuaj yeem txhim tsa cov xov hlau hauv av, dej txau kom muaj cov av noo noo, lossis chaw ua si flooring hauv qab cov khoom. Txo kev tuav ntawm lub hnab ntim qhib kom txo tau kev sib tsoo, lossis hloov chaw thau khoom thiab thauj khoom.