1) manhole door
人孔门
1.
The problems in the air swept mill, such as the bolts of manhole door easily broken and the base plate of feed hopper easily worn, are solved with modification, including improvement on fixing structure of manhole door and reinforcement by a liner plate of ZGMn13 material for the base plate.
介绍风扫磨存在人孔门螺栓易断,进料斗底板易被磨损等问题。
2) access door
检查门，人孔门;检修门，入孔盖;便门;人孔;通道门
3) manhole door of refeed valve
返料阀人孔门
5) door opening
门孔
补充资料：孔门
1.孔子的门下，借指儒家。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条