This paper analyses systematically common sampling methods and their own' s design effect on the base of the theory of sampling technique.

本文以抽样技术理论为基础，系统地分析了几种常用的抽样方法及各自的设计效果。

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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。

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Chapter 4 mainly illuminates safety sampling technique, including theory of corer tube stability, qualitative analysis of parameters of corer releasing and a new type connection of plug pin.

第四章介绍了取样器安全性准则，主要包括保真取样器稳定性理论及取样器释放参数的定性分析及新型销轴式连接方式。

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