According to the comparison of several impervious films, the dependability and application of high density polyethylene (HDPE) film at city waste sanitary landfill were expounded in this paper.

通过对几种防渗膜的性质比较，阐述了高密度聚乙烯(HDPE)膜用于城市生活垃圾填埋场的可靠性及应用情况。

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Shaving board adhesive consists of mixed modified waste liquid and UF resins. Proper process can make the shaving board be of suitable strength and property density.

改性的麻杆黑液与自制脲醛树脂按一定比例调配作为刨花板粘合剂，选择适当的工艺条件，将麻芯与刨花的混合料压制成具有一定强度、适当密度值的板材。

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The test results also show that apparent density, Marshall stability, resistance to rutting and skidding of samples containing waste glass are slightly lower than those without waste glass.

掺加一定比例的废玻璃对沥青混合料的设计沥青用量影响不大，但会降低沥青混合料的密度，并使沥青混合料试件的马歇尔稳定度、抗车辙能力和抗滑性略有降低；

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In recent years, problems have fouled acquaculture's reputation: pollution from waste runoff, high disease and parasite rates due to a high density of fish and the uptake of industrial chemicals harmful to humans have combined to make fish less healthy to eat.

FORBES: Magazine Article