Three meters worth of concrete walls stand between his lab and the outside.
三米厚的水泥墙把他的实验室和外界隔绝开来，这原来是准备用来隔绝核辐射的。
Through testing the properties of fly ash pavement concrete in the lab and field, we get ample data on flexural strength, abrasion resistance, penetrability resistance and frost resistance.
针对粉煤灰道面混凝土的性能，在试验室和现场进行了系统的研究。
The strength character of lean concrete road base material influenced by age and the amount of fly-ash used in it was studied through test in the lab.
通过室内试验，研究了不同粉煤灰掺量、不同龄期对贫混凝土基层材料 强度的影响规律，并与不掺粉煤灰贫混凝土的 强度 特性进行了对比研究。
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