SHORT AND NARROW PACKING CHAMBER Sealing effectiveness improves as overall packing length shortens. Chamber wall is burnished to a superior finish.是什么意思_SHORT AND NARROW PACKING CHAMBER Sealing effectiveness improves as overall packing length shortens. Chamber wall is burnished to a superior finish.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句