5 Parts used for oxygen service must be labelled accordingly and preserved with adequate packaging.
5 Parts used for oxygen service must be labelled accordingly and preserved with adequate packaging.
用于氧的服务中的零件必须标识，和采用适当包装方法对其进行保护。
5 Parts used for oxygen service must be labelled accordingly and preserved with adequate packaging.
用于氧的服务中的零件必须标识，和采用适当包装方法对其进行保护。