protective gap保护放电器,保险隙
protectiveadj.保护的;防卫的
protective uniform pant防护制服裤
Protective installation保护配置
protective forest belts护田林带
protective coal pillars保护煤柱
protective jurisdiction保护管辖权
protective trade policy保护贸易政策
protective trade system保护贸易制度
protective baffle plate防护挡板
protective inflammation防御性炎
protective exploitation保护性开发