The periodical vibration of grates may lead to cyclical fluctuation of furnance pressure.

炉排的周期性振动会导致炉膛压力的周期性波动.

Star anise drying apparatus and drying house with blast furnance were used to dry star anise.

用八角烘干机、高炉烘房对八角鲜果进行烘干试验.