常見(jiàn)例句雙語(yǔ)例句Low pit aspiration ratio and cracks of some bordered pits are the main reasons for increasing liquid impregnation after radio-frequency vacuum drying treatment.具緣紋孔的閉塞率較低以及部分具緣紋孔周緣破裂是高頻真空干燥后木材浸注性提高的主要原因。 返回 bordered pit