tuam txhab xov xwm
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Dab tsi yog qhov sib txawv ntawm qhov kaw hluav taws tua hluav taws thiab qhib hluav taws tua hluav taws?India, Nyab Laj, Iran
Lub tshuab hluav taws xob tua hluav taws tau muab faib ua qhov kaw hluav taws tua hluav taws thiab qhib hluav taws tua hluav taws. Cov txheej txheem sib txawv muaj cov qauv kev ua haujlwm sib txawv ntawm lub taub hau sprinkler. Niaj hnub no, cov chaw tsim hluav taws xob sprinkler yuav tham txog qhov sib txawv ntawm cov no. A...Nyeem ntxiv -
Ua hauj lwm hauv paus ntsiab lus ntawm ntau yam hluav taws kub sprinkler taub hau
Lub iav pob sprinkler yog qhov tseem ceeb thermal rhiab heev nyob rau hauv lub tshuab tsis siv neeg sprinkler. Lub khob iav yog ntim nrog cov organic daws nrog sib txawv expansion coefficients. Tom qab thermal expansion ntawm qhov sib txawv ntawm qhov kub thiab txias, lub khob pob tawg, thiab cov dej ntws hauv cov raj xa dej hauv ...Nyeem ntxiv