Home > Term: hélice de aço
hélice de aço
Um aço eretas ou post usado para suportar o telhado nether longwall uma ou outra face. Geralmente incorpora um dispositivo rendendo.
- ส่วนหนึ่งของคำพูด: noun
- อุตสาหกรรม/ขอบเขต: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
0
ผู้สร้าง
- Iaras
-
(V.I.P) 23010 points - 100% positive feedback
(Sao Paulo, Brazil)
