handhole
美 英 ['hændhəʊl]
英汉解释
例句
Reasons and Solution for Leakage from Header Handhole on Economizer of Boiler
锅炉省煤器联箱手孔泄漏原因及解决方法
Quick-opening handhole with rotatable cover
回转盖快开手孔
handhole with butt welded flange
对焊法兰手孔