Qhov tsis txaus bulging ntawm dig muag rivets txhais li cas?

Tsis txaus bulging: vim hais tias lub breaking quab yuam ntawm qhov muag tsis pom rivet tsawg dhau, lub rivet tsis tau kiag li riveted, thiab lub breaking point ntawm qhov muag tsis pom rivet yog disconnected, ua rau tsis txaus bulging ntawm qhov muag tsis pom rivet.tshwm sim nyob rau hauv ib tug tsis ua hauj lwm.

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