safety can安全罐
safetyn.安全;保险
safety life-span安全使用寿命
safety shut-down安全刹车
safety rock pillar安全岩柱
safety life design安全寿命设计
safety berth latch卧铺安全锁栓
safety coefficient安全系数,安全率
safety check table安全检查表
safety device belt保安装置皮腰带
safety expenditure安全费用
safety requirement安全必备品