Akụkọ ngwaahịa
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Kedu ihe bụ akara mmanụ valvụ?
Valve stem akara bụ ụdị akara mmanụ, n'ozuzu mere nke vulcanised exoskeleton na fluoroelastomer, na a onwe-tensioning mmiri ma ọ bụ ígwè waya arụnyere na dayameta nke akara, na-eji akara engine valve ndu rod.The valve stem mmanụ akara bụ. dị na cylinder isi, n'okpuru valvụ ...GỤKWUO
