But in the fuel lean and fuel rich explosive gas, the electrical conductivity increases gradually from bottom to top.

贫燃料与富燃料爆炸气体中，由管道底部向上，其电导性是逐渐增大的。

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For indirect ignition method, the condition of fuel rich ignition torch was studied in contrast with the condition of fuel lean ignition torch.

在间接点火方案中对点火火炬为富燃和富氧两种情况进行了对比分析。

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Using fine diameter boron, coating boron and adding other ingredient into the boron based fuel rich propellants can increase employed efficiency of boron.

在含硼推进剂中使用细粒径的硼，对硼进行包覆并添加其它组分，可提高硼在推进剂中的利用效率。

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She will be replacing that energy with nutritionally rich fuel.

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He told delegates today that it was totally unacceptable for fuel poverty to persist in energy rich Scotland.

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This would be cost-effective because most equipment in rich countries is already fuel-efficient.

ECONOMIST: A cooling off period