safetywire保险丝safetyn.安全；保险safety standardization安全标准化safetyspace and volume安全空间与容量safety friction clutch保险摩擦离合器safety of uranium mine铀矿安全safety regionalization安全区域化safety ensuring duties安全保障义务safety risk monitoring仿真系统safety operating rules[法] 安全操作规程Safety is paramount.安全至上。safety protection cost安全保护成本