在六月份跌倒进30年的谷底后，消费指数像汽油和天然气的价格在达到历史记录后回落。
After hitting its lowest level in nearly 30 years in June, the gauge had begun to improve as oil and gas prices fell from their record highs.
天然气对中子孔隙度测量的影响不能由含氢指数的差别来解释。
That part of the effect of gas on the neutron porosity measurement that is not explained by differences in hydrogen index.
采用火灾爆炸指数法对天然气净化厂生产装置进行了安全评估。
Using the method of fire and explosion indexes, a safety assessment is made of the production device in a gas-cleaning plant.
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