由于网格法没有考虑水土保持措施因子，调查得到的土壤侵蚀量结果比采用抽样调查法得到的结果偏大。

Because the soil and water conservation factor was not concluded in net method, the soil erosion modulus calculated with net method was higher than that calculated with sampling survey method.

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方法：采用普查法和抽样调查法相结合，对河南省乙类大型医用设备的相关资料进行了调查。

Methods: Census method and sampling survey method were both used to investigate the related data of the second-class large medical equipments in Henan province.

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采用问卷调查法，对我校0 1、0 2级健美操专项的学生进行了抽样调查，调查的项目主要是健美操教学的内容和形式。

By using questionnaires, we made a sampling investigation on students specializing in calisthenics in Grade 01 and 02. Investigation items include teaching content and teaching model.

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