altern交错群落
alterv.改变;更改;阉割;切除卵巢
alternating plan交替制
alternating lake交替湖
Alter-rigidity变刚度
Alternaria tenui黑斑病
alternating axis交变轴
alternation gate“或”门
alternating bath冷热交替浴
Alternaria sp.n.姜链格孢
alterable memory可变存储器
altered minerals蚀变矿物