Field investigation includes traffic volume, axle loads, types, amount, and severity of pavement distress, measurement of deflection of pavement highway structure, and pavement sampling.
路面调查工作包括交通量调查，轴载调查，路面损坏的类型、数量与严重程度的记录，路面结构的弯沉以及路面取样。
A field investigation of corrosion status of buried pipeline and measurement of the soil parameters were conducted, accompanied with corrosion test piece laying and field sampling.
进行了现场腐蚀状况调研，对现场埋地管道的土壤腐蚀情况就地测量了相关参数，并进行了腐蚀试片埋设和现场取样工作。
Methods Systematic sampling method was used in field Oncomelania investigation, and laboratory and field simulating drowning methods were also performed to observe survival of Oncomelania.
方法应用系统抽样法进行现场查螺，现场和实验室模拟水淹实验观察钉螺存活情况。
Methods Systematic sampling method was used in field Oncomelania investigation, and laboratory and field simulating drowning methods were also performed to observe survival of Oncomelania.
方法应用系统抽样法进行现场查螺，现场和实验室模拟水淹实验观察钉螺存活情况。
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