In this work the simple thick-target sampling technique was adopted and a micro-computer was employed for making corrections on the basis o 'f the theory.
本工作针对地质样品的特点，尝试了简单、方便的厚靶制样法，并采用计算机处理技术解决了由此而引起的复杂的理论校正问题。
The premise of a polling pattern is a periodic sampling of a target metric.
轮询模式的前提是对目标指标的定期采样。
Methods a questionnaire was conducted among target population by multistage sampling.
方法采取多阶段抽样，对目标人群进行询问式问卷调查。
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