balance gas meaning in Chinese

零点气
平衡气

When cylinders are filled individually , every cylinder should be tested for identity and assay of all of the component gases and at least one cylinder of each uninterrupted filling cycle should be tested for identity of the balance gas in the mixture
当气瓶是单独灌装时，每个气瓶都应做特性检验和不同气体的成分分析，并且在每个连续灌装周期中至少有一瓶气应做鉴别试验。
In the case of a medicinal gas produced by mixing two or more different gases in a cylinder from the same manifold , at least one cylinder from each manifold filling operation cycle should be tested for identity , assay and if necessary water content of all of the component gases and for identity of the balance gas in the mixture
在用多头分配器混合两种或两种以上不同医用气体，然后给一个气瓶灌装的情况下，在每个灌装周期中至少有一瓶应做鉴别试验，必要时做所有成份气体的水分含量测定和混合气体的鉴别试验。