- A.1.5%,
- B.2.0%,
- C.3.0%
- A.1.0%,
- B.1.5%,
- C.0.5%
- A.7,
- B.10,
- C.30
- A.10,
- B.20,
- C.30
- A.20,
- B.50,
- C.100
- A.1.0%,
- B.1.5%,
- C.0.5%
- A.1.0%,
- B.1.5%,
- C.0.5%
- A.30,
- B.60,
- C.120
- A.0.5,
- B.0.75,
- C.0.25%
- A.1,
- B.3,
- C.2
《煤矿安全规程》对掘进巷道中风速规定()。
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