有机物被微生物厌氧发酵消化并制取人工沼气的密闭装置，在我国称为沼气池。
The airtight installation to deposit organic matter witch be fermented by microorganism and making biogas, we call it biogas digester in China.
城镇建筑施工熔化沥青使用固定熔化装置时，应当采用密闭方式。
When using fixed installations for melting bitumen at construction sites in cities and towns, these fixtures should be of the sealed type.
不要把装置安装在诸如书橱或壁橱等密闭的地方。
Do not install the appliance in a confined space, such as a bookcase or built-in cabinet.
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