safety falling condition of lifeboat的意思|示意
美 / /
英 / /
救生艇安全下降情况
safety falling condition of lifeboat的网络常见释义
救生艇安全降落条件 ...fety clutch安全离合器 safety cock安全旋塞 safety factor安全因数 safety falling condition of lifeboat救生艇安全降落条件 safety falling time-limit of lifeboat救生艇安全降落时限 ..