ʻO nā valve maʻamau i ka hoʻomaʻemaʻe ʻana, ka lubrication, ke ʻano momona Kaʻana He aha nā kiwi maʻamau i hoʻohana ʻia ma ka pūnaewele wela?
ʻO nā valve maʻamau i ka hoʻomaʻemaʻe ʻana, ka lubrication, ke ʻano momona Kaʻana He aha nā kiwi maʻamau i hoʻohana ʻia ma ka pūnaewele wela? Valve trapezoidal thread, valve stem nut and support sliding parts, bearings parts, gear and worm gear, worm meshing parts and other parts with...
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