长椅是由建筑混凝土预制构件。
The bench is made of precast elements in architectural concrete.
我们提出使用素混凝土是由于其低廉的维修费用，并且以预制构件进行搭建保证了建筑施工的速度，另外能够避免对大学日常生活产生影响。
We proposed the use of exposed concrete due toits low maintenance, developed through prefabricated elements that provide speed of execution, and to prevent affectingthe daily lifeof the University.
的宜用捣棒人工捣实。检验现浇混凝土工程和预制构件质量的混凝土，试件的成型方法应与实际施工采用的方法相同。
To concrete used to test cast-in-place concrete project and prefabricated parts quality, forming method of specimen shall be the same as method adopted in practical construction.
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