“人孔”造句

请将人孔盖移开。
Please move the manhole cover away .

人孔盖使用不锈钢螺栓和螺母拧紧.
Stainless steel bolts and nuts shall be tightened on manhole covers.

适用于船舶的水密和油密人孔盖.
Used for the watertight and oil tight manhole cover.

• #人孔