Based upon the experimental behavior of porous sand under squeezing, two types of status are defined to character the process: the filling of interval space, and the yielding slippage among sands.
提出颗粒型砂介质在压实过程中的两种特征：孔隙填充状态和颗粒滑动状态；
The pilot study was done on the filling shape of liquid metal in lost foam process with dry sand by using rapid photography method and contact time method.
采用高速摄影法和电极触点法，对干砂消失模铸造金属液的充填形态进行了初步研究。
The article based on the research and analysis causing ineffective and low-effective, and conducted the process of second sand filling fracturing.
在研究分析低效及无效原因的基础上，研究出二次加砂压裂工艺。
Mean while, the construction process of the closure embankment for reclamation work has been also investigated and the measures for leakage prevention by filling sand is reviewed.
同时调研了围海工程堵口海堤的施工过程，并对灌砂防渗措施加以评述。
Mean while, the construction process of the closure embankment for reclamation work has been also investigated and the measures for leakage prevention by filling sand is reviewed. Finally, the experi…
同时调研了围海工程堵口海堤的施工过程，并对灌砂防渗措施加以评述。
The key basic technology in full mould casting process includes: material and formation of pattern, coating, vibratory fill of moulding sand as well as molten metal filling.
实型铸造法的关键基础技术包括：模样的材料及成形、涂料、型砂的振动充填、金属液的充填。
On this basis, experimental research on screening the building sand was carried out, and the process of land production by filling the remnant iron tailings into sea was discussed.
在此基础上，进行了建筑砂筛出试验以及剩余尾矿砂填海造地的探讨。
On this basis, experimental research on screening the building sand was carried out, and the process of land production by filling the remnant iron tailings into sea was discussed.
在此基础上，进行了建筑砂筛出试验以及剩余尾矿砂填海造地的探讨。
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