当采用双环入渗法和环刀法测定土壤的饱和渗透系数时，土壤剖面土壤水压力势分布规律不同。
The distribution law of pressure potential in saturated soil using two-ring infiltration method to determine the permeability coefficient was different to that using cutting ring method.
为了提高土壤容重测定中土样采集的效率和精准性，将环刀法和原状取土管法结合，进行了分段式原状取土器的研制。
To improve efficiency and veracity of soil sampling in testing bulk density, the cutting ring method and in situ soil tube method were combined and a multi-segment in situ soil sampler was designed.
鉴于瑞雷波勘测技术在工程领域中的应用范围逐渐扩大，并取得了较好的效果，故有必要以瑞雷面波法对路基压实度进行检测，并与常规方法灌沙法和环刀法进行对比，验证其可行性与可靠性。
Given this, it is necessary to detect the roadbed compactness with Rayleigh wave method and compare it with the sand cone method and cutting ring method, which verify its feasibility and reliability.
鉴于瑞雷波勘测技术在工程领域中的应用范围逐渐扩大，并取得了较好的效果，故有必要以瑞雷面波法对路基压实度进行检测，并与常规方法灌沙法和环刀法进行对比，验证其可行性与可靠性。
Given this, it is necessary to detect the roadbed compactness with Rayleigh wave method and compare it with the sand cone method and cutting ring method, which verify its feasibility and reliability.
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