A.鋒前S~SW,鋒后N~NW B.鋒前E~NE,鋒后N~NW C.鋒前N~NW,鋒后S~SW D.鋒前E~NE,鋒后S~SW
A.E~SE轉(zhuǎn)為S~SW B.E~NE轉(zhuǎn)為N~NW C.S~SW轉(zhuǎn)為N~NW D.N~NW轉(zhuǎn)為S~SW
A.N-NW-SW B.NE-E-SE C.SE-NE-NNW D.E-SE-SW