These problems are frequently encountered in field test which are common factors influencing the precision of infiltration test.
这些问题在野外试验中常常遇到，是影响渗水试验精度的常见因素。
Based on the introduction of principle and method in infiltration test of welding line, the standard is put forward for quality evaluation of joint construction in prestressed concrete pipe pile.
在介绍焊缝渗透探伤的基本探伤原理、方法及测试步骤的基础上，给出预应力砼管桩接桩焊缝的质量评定标准，并建议在管桩的施工中渗透探伤法可作为质量控制的常规检验手段。
Based on soil field infiltration test, the effects of corn straw mulch on freezing-thawing soil infiltration capacity are discussed.
基于大田土壤入渗试验，讨论了玉米秸秆覆盖对土壤冻融特点及入渗能力的影响。
Based on soil field infiltration test, the effects of corn straw mulch on freezing-thawing soil infiltration capacity are discussed.
基于大田土壤入渗试验，讨论了玉米秸秆覆盖对土壤冻融特点及入渗能力的影响。
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