manholen. 人孔進人孔學術名詞人孔：電力學、紡織科技、造船工程、電機工程、礦冶工程、電子工程修理孔：紡織科技啟視門：紡織科技避車峒：礦冶工程進入孔：航空太空檢修孔：電力工程口：海事窖井：獸醫學英文釋義a hole (usually with a flush cover) through which a person can gain access to an underground structure