hinged manhole cover
铰链式人孔盖
portable manhole cover
便携式人孔盖
cast iron manhole cover
铸铁人孔盖板
Why is a manhole cover round
为什么下水道的盖子是圆形的？
Why manhole cover is round ?
下水道井盖为什么是圆的?
Please move the manhole cover away.
请将人孔盖移开。
Why are manhole cover round in shape?
点解下水道的盖是圆形的?
Why are manhole cover round in shape ?
点解下水道得盖是圆形得?
The manhole cover is too weighty to move.
人孔盖在重移不动。
Or the manhole cover outside your apartment?
还是你公寓外面的下水井盖？
This guy's dropping like a manhole cover now, paul.
这飞机就跟扎猛子一样, 保罗。
Used for the watertight and oil tight manhole cover.
适用于船舶的水密和油密人孔盖。
Cast iron manhole cover anti impact resistance, easy rupture.
铸铁检查井盖不耐冲击，易破裂。
Put a manhole cover on the tank top for removing filters and strainer.
在油箱顶部设置检修孔，以拆卸过滤器和滤清器。
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