用于测试营救系统和组件的主体的规范的英文

standard specification for masses used in testing rescue systems and components

• 测试:    test; testing; che ...
• 营救:    rescue; save; succ ...
• 系统:    system
• 和:    mix; blend
• 的:    4次方是 The fourth po ...
• 主体:    main body; main pa ...
• 规范:    standard; norm; sp ...