The measurement error of differential absorption laser radar caused by the shift of its center frequency in measuring atmosphenc density has been discussed particularly.

详细地讨论了微分吸收激光雷达测量气体密度时中心频率的漂移所引起的测量误差。

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As the shift comes about, people need to be ready because the density that you now experience will not align on the other side of the shift.

当转移出现，人们需要准备好因为你现在经验的密度将不会排列在转移的另一边。

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The influence of alumina addition on the bulk density, mechanical strength, activity and thermal stability of high temperature shift (HTS) catalyst was studied in laboratory.

实验室研究了添加氧化铝对中温变换催化剂堆密度、机械强度、活性和热稳定性的影响。

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But some other areas on our list are benefiting from a hitherto unnoted shift of high-end services to lower-cost and often lower-density regions.

FORBES: The Cities Winning The Battle For The Biggest Growth Sector In The U.S.