Auto-force-oil mechanism is equipped on needle bar and rocker lever, avoiding oil leakage. Meantime, equip with thread-sucking mechanism.是什么意思_Auto-force-oil mechanism is equipped on needle bar and rocker lever, avoiding oil leakage. Meantime, equip with thread-sucking mechanism.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句