Jacket: Black low mid or high density polyethylene.

护套：黑色低密度或中密度或高密度聚乙烯。

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An area of abnormal MASS concentration (mascon) or high DENSITY on the MOON beneath the LUNAR MARIA.

反常的质量聚集区，或者指在月亮上，位于月海底下的高密度区域。

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Toilet partitions constructed of High Density Polyethylene (HDPE) or High Density Polypropylene will not be acceptable.

采用高密度聚乙烯（HDPE）或高密度聚丙烯材料制作的卫生间隔断是不可接受的。

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Torcetrapib aims to raise good cholesterol, or high-density lipoprotein, by blocking the cholesterol ester transfer protein.

FORBES: Magazine Article

Nothing on the market today increases "good cholesterol, " or high-density lipoprotein (HDL), as much as torcetrapib did in early clinical trials.

FORBES: Pfizer: Still In The Game

It also lowered the so-called good cholesterol, or high-density lipoprotein (HDL), and it did not enter the cell, a characteristic Medford wanted hisdrug to have, because some of the oxidation process takes place within cellular membranes.

FORBES: Inflamed Hearts