检查孔inspection port;inspection hole详细»
检查孔access hole;inspection hole;sight hole;sighthole详细»
检查孔access eye;inspection eye;inspection hole;sight hole详细»
检查孔inspection hole;inspection port详细»
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检查孔access opening;inspection opening详细»
检查孔access eye;access hole;inspeciton eye;inspection borehole详细»