Raws li kev txheeb cais ntau tshaj 1 lab thoob ntiaj teb cov twj tso kua mis uas twb muaj lawm, kev tsim ntau yam twj tso kua mis ntws los ntawm tsawg tshaj li ib nkas loos ib feeb mus rau ntau tshaj 500 nkas loos ib feeb.Kev muag khoom ntawm lub twj tso kua mis centrifugal ntawm kev muag khoom, kev muag khoom ntawm diaphragm twj tso kua mis 73%, qhov seem ntawm kev muag khoom ntawm 9% los ntawm lub twj tso kua mis teb reciprocating twj tso kua mis thiab.Hauv ntau tus neeg yuav khoom, cov chaw kho dej hauv nroog yog cov neeg yuav khoom loj tshaj plaws ntawm kev yuav khoom, xyoo 2007 yuav mus txog $ 6.8 billion.Qhov thib ob yog feem ntau: dej hauv nroog, tshuaj lom neeg, refining, hluav taws xob fais fab, roj thiab roj, thiab lwm yam.
Post lub sij hawm: Lub Xya hli ntuj-13-2021