短语词组短语Thermal convect 热对流Forced Convect 送风定温恒温器convect ion 对流convect -diffusion 对流扩散convect ion pass 对流烟道convect heat transfer 对流传热Forcing hot air to convect 强制热风对流convect ion 2d iffu sion 对流2扩散 返回 convect