人孔门 meaning in Chinese

manhole door

Answer : beard general accumulates pink to keep clear of completely about equipment interior , isolate reliably with concerned milling system , if need to enter in - house job , beard general is opened entirely about manhole door , in order to strengthen ventilated
答：须将有关设备内部积粉完全清除，并与有关的制粉系统可靠地隔绝，如需进入内部工作，须将有关人孔门全部打开，以加强通风。