These include hand collecting, using baits to attract the ants, ground litter sampling, and the use of pitfall traps.(这些包括人工收集，使用诱饵吸引蚂蚁，地面垃圾取样，以及使用陷阱诱捕。)
A method of systematic sampling has been adopted for Ailuropoda melanoleuca in Foping Nature Reserve.(已对佛坪自然保护区的大熊猫采用系统采样的方法。)
Database quality control and statistical sampling.(数据库质量控制和统计抽样。)
The sampling frequency is specified in samples per day.(抽样频率用每天抽样次数指定。)
Many control systems require periodic sampling and processing.(大量控制系统要求周期性采样与处理。)
RUNSTATS with system page-level sampling.(带有系统页级抽样的runstats。)
What kind of sampling procedure do you use?(你将采用什么样的抽样程序？)
Time sampling means that researchers choose various time intervals for their observation.(时间采样是指研究人员选择不同的时间间隔进行观察。)
It may determine whether one should choose nonprobability sampling or probability sampling.(它可以决定一个人应该选择非概率抽样还是概率抽样。)
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