Raws li lub siab - hydrostatic kuaj ntawm muab kauv vauve welded kav yog cov txheej txheem tseem ceeb. Txhua cov yeeb nkab steel yuav tsum tau dhau hilostatic hydrostatic kuaj, thiab tuav lub sijhawm yuav tsum ua kom tau raws li cov cai coj los ua, thaum yuav tsum tsis muaj xau thaum ntsuas kev sim.
29.1. Vim li cas ua ib qho kev sim dej lim dej zoo li no?
Sep 24, 2025
Xa kev nug
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