请教一个问题
在一些登山报告里会出现以“M”开头的难度级别定义，那位可否提供一个这个类型的级别对照表，包括所代表的含义，谢谢啦！ 本帖最后由 bince 于 2012-11-23 01:54 编辑来自alpinist.com
Mixed Grade:
These routes require considerable dry tooling (modern ice tools used on bare rock) and are climbed in crampons; actual ice is optional but some ice is usually involved.
M1-3: Easy. Low angle; usually no tools.
M4: Slabby to vertical with some technical dry tooling.
M5: Some sustained vertical dry tooling.
M6: Vertical to overhanging with difficult dry tooling.
M7: Overhanging; powerful and technical dry tooling; less than 10m of hard climbing.
M8: Some nearly horizontal overhangs requiring very powerful and technical dry tooling; bouldery or longer cruxes than M7.
M9: Either continuously vertical or slightly overhanging with marginal or technical holds, or a juggy roof of 2 to 3 body lengths.
M10: At least 10 meters of horizontal rock or 30 meters of overhanging dry tooling with powerful moves and no rests.
M11: A ropelength of overhanging gymnastic climbing, or up to 15 meters of roof.
M12: M11 with bouldery, dynamic moves and tenuous technical holds.
冰岩混合路线的级别。根据水冰（WI）级别并参考岩石路线难度混合而来。从运动角度一般来说从M4开始计算。wikipedia.org给出了一个模糊的级别对应关系：
M4 - 5.8 - WI4
M5 - 5.9 - WI5
M6 - 5.10 - WI6
M7 - 5.11 - WI7
M8 - 5.11+
M9 - 5.12-
M10 - 5.12
M11 - 5.12+
M12 - 5.13- 感谢感谢········:handshake 回复 2# bince
M8 - 5.11+
M9 - 5.12-
M10 - 5.12
M11 - 5.12+
如果是这样，那么NB峡谷的Mix线路可能不止M8
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