permanent zone是什么意思

网络释义

1)permanent zone,永久载重线区2)permanent load,永久荷载3)permanent load,永久负载4)permanent ballast,永久压载5)permanent snowline,永久雪线6)Permanently shadowed area,永久阴影区

Range of modular design value of permanent loading effect control;

永久荷载效应控制的组合设计值范围