这些问题的提出就使得深海海底表层沉积物的保真取样技术研究非常有必要。
So, all above mentioned makes it necessary to study the truth-preserving sampling technique for the deep-sea surface layer sediments.
第六章比较了两种深海沉积物保真取样系统的保真触发原理，并分析了其结构。
In chapter 6, the spring principles of two types deep-sea sediments truth-preserving sampling systems are compared and the structures are analyzed.
分析了设计天然气水合物保真取样系统的理论基础，即天然气水合物的化学性质、天然气水合物的形成及稳定条件。
The basic theory about how to design a in-situ sampling system has been discussed firstly based on chemistry properties and conditions of gas hydrate formation.
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。
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.
而为了确保PVT实验的有效性，就需要借助高性能的取样装备，确保采样过程中样品的保真度。
However, to ensure the effectiveness of PVT experiments, we need the help of high-performance sampling equipment to ensure the fidelity of the samples in the sampling process.
而为了确保PVT实验的有效性，就需要借助高性能的取样装备，确保采样过程中样品的保真度。
However, to ensure the effectiveness of PVT experiments, we need the help of high-performance sampling equipment to ensure the fidelity of the samples in the sampling process.
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