The polyphony board covered with aluminum foil of hollowwall is a new type of wall which heat insulation of aluminum foil has better heat preservation effect than cubage heat insulation.
缀铝箔聚苯板空心墙体是一种新型的保温墙体 ，其采用的铝箔绝热与容积绝热相比具有较好的保温绝热性能。
2
A half-dozen anonymous workers scout ahead to check possible hive locations in hollow trees or wall cavities.
半达的无名工蜂在前方侦察，核查能够安置蜂巢的树洞和墙洞。
3
The imaginary part is some construction space, such as the filler wall, railing, balcony, build parts, materials with hollow aluminum plate, various combination of the pattern is nine star.