It is indicated that volume distribution should be selected in shielding temporary plugging technique, and the density of material should be considered.

指出实施屏蔽暂堵技术时宜选用体积分布图，选择屏蔽暂堵剂时须考虑物质的密度。

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The source and detector, however, are arranged to be sensitive to the density of material in the annulus and can distinguish between fluid and cement behind the casing.

与密度测井不同的是，其伽马射线源和探测器的布置方式能使它们对井内环形空隙中物质的密度很敏感，可以将套管外面的流体和水泥区分开来。

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The average density of interstellar material in the vicinity of our Sun is 1,000 to 10,000 times less than the best terrestrial laboratory vacuum.

在我们的太阳附近，星际物质的平均密度比最好的地球实验室真空还要低1000到10000倍。

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This incessant march of energy density (more energy per unit of raw material) has undeniable logic, deniable only by the illogical or irrational.

FORBES: Looking At Nuclear In A New Light

This incessant march of energy density (more energy per unit of raw material) has undeniable logic extending along the entire length of the arrow of progress.

FORBES: Investing in Biofuels or Biofools?

The result is a material that has an energy density of about 0.005 watt-hours per kilogram.

ECONOMIST: Carbon-composite batteries