Yeah, hard lanjiao is like a piston that cause a differential pressure gradient and Compressed volume insai the hole vs the ambient air… causes some air to escape and give puck puck sound
Yeah, hard lanjiao is like a piston that cause a differential pressure gradient and Compressed volume insai the hole vs the ambient air… causes some air to escape and give puck puck sound
Its true what, only different between the engine and intercourse is the latter lack a gasket to contain the compressed fuel fixture and thus escape out of the gaps.