排气管衬垫
gasket for exhaust manifold
排气管排机油
machine oil discharging from discharging duct
单腔气管导管
single-lumen endotracheal tube SLET
丁字形气管导管
T-shaped tracheal cannula
缸盖气门导管
cylinder head valve guide
进气门导套
intake valve guide bushing
可测温气管导管
temperature measuring endotracheal tube
气管导管护理
endotracheal catheter nursing