通过对比试验研究了石屑混凝土的力学性能。
Compared with ordinary concrete, the mechanical properties of stone-chip concrete were studied.
通过对比试验研究了石屑混凝土的钢筋锈蚀性能，并对所用的两种测试方法进行了比较。
The paper studies on the reinforcement rust performance of stone chip concrete by contrast test.
同时通过对比试验研究了低强度的超声波对膜污染防治作用及其在膜-生物活性炭反应器中对生物过程的强化作用。
And the effects of ultrasonic irradiation at low intensity in BACMR on the enhancement of biological action and membrane pollution control were investigated through parallel experiments.
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