单词	主毛--护毛
释义	护毛，主毛guard hair
随便看	penetration turn penetration twin penetration--twin penetration voltage penetration wave survey penetration welding penetration 〔of grease〕 penetration， barrier penetration， beta penetration， control-rod penetration， deep penetration， depth penetration， intergranular penetration，virus penetrative penetrative cleavage penetrative convection penetrative downdraft penetrative foliation penetratively penetrativeness penetrative (slaty) cleavage penetrative structure penetrative--twin penetrator