ALS
abbr.
amyotrophic lateral sclerosis
antilymphocyte serum
Approach Light System 【航空学】进场照明系统
autograph letter signed 有签名的亲笔信
Automatic Landing System 【航空学】自动着陆系统
als,a.l.s.
abbr.
amyotrophic lateral sclerosis
anticipated life span 预期寿命,估计寿命
antilymphocy