Industry Index is an important base of delineating ore body and calculating reserves of deposit, and the protection and rational utilization of mineral resources in the important levers.

矿床工业指标主要是圈定矿体和估算资源储量的依据，是保护和合理利用矿产资源的重要杠杆。

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Conclusion the activity index appears to be simple, rational and effective for measuring the activity of lupus nephritis.

结论这一活动性指数能较简便、合理、有效地测定狼疮性肾炎的活动程度。

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The safe and rational critical value can be determined according to the descrete state of index values.

而后，根据指标数值的离散情况确定安全合理的临界值。

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The most rational reaction came from Index on Censorship, which declared the deal "a sad day for press freedom in the UK".

BBC: Press reform: Media reaction to regulation deal