الصفحة الرئيسية > Term: manhole cover
manhole cover
A movable cast-iron plate fitting a cast-iron frame bedded on a rebated concrete slab or kerb over a manhole. Covers over foul drains are formed to prevent escape of foul air.
- قسم من أقسام الكلام: noun
- المجال / النطاق: التعدين
- الفئة: تعدين عام; Mineral mining
- Government Agency: USBM
0
المنشئ
- ed.young
-
(V.I.P) 21084 النقاط - 100% positive feedback
(Milwaukee, United States)
