A raised lug on the bottom of the retainer side seat locks it into the valve body, eliminating any possibility for the ring to rotate out of position.是什么意思_A raised lug on the bottom of the retainer side seat locks it into the valve body, eliminating any possibility for the ring to rotate out of position.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句