Knowledge to Answer
Head of the external characteristics of the cracks is what?
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Head of the external characteristics of the cracks is what?
White smoke exhaust run, post-combustion exhaust sound, channeling sound of tank, valve by valve seat deformation have a strict closure of the leak, and so on.
White smoke exhaust run, post-combustion exhaust sound, channeling sound of tank, valve by valve seat deformation have a strict closure of the leak, and so on.
