The sandtest and model land test were the proof of the stimulation of litter on the growth of ash.
室内砂培试验证明、落叶松的枯枝落叶能促进水曲柳的生长，模拟样地试验验证了室内砂培试验的结果。
2
The effect of capillary pressure and water saturation on sand production has been researched through the core flow test in this paper.
通过室内岩心流动试验，研究了毛管力、含水饱和度对岩石出砂规律的影响。
3
This paper introduces the test results and calculative method by using the composite foundation of sand-stone pile and concrete pile with low strength.