In the onsite construction process, external temperature has a great relevance with the construction of cement concrete structure especially in the sudden cold or hot.

在现场施工过程中发现，外界温度对混凝土构件的施工有很大的相关性，特别是在爆冷暴热的时候更表现的直观。

Found that medium-sized city in the middle class people sports and leisure consumer field with their academic qualifications, age, consumer identity, social status, have great relevance;

研究发现中等城市中产阶层人群运动休闲消费场域与他们的学历、年龄、消费认同、社会地位有很大的关联；