短语词组短语volatiles interface 气体样品进样接口reducing volatiles 还原气体tobacco volatiles 烟草挥发物vegetable volatiles 蔬菜气味rice volatiles 水稻挥发物secondary volatiles 挥发性次生物质hindgut volatiles 后肠挥发性物质external volatiles 外挥 返回 volatiles