提出了一种作为安全带预紧器核心部件的新型离合机构，应用该机构开发了一套新型预紧式汽车安全带，介绍了它的结构组成、工作原理和性能。
In this paper, first, a new type of vehicle safety belt is developed based on a new clutch proposed as the key part of pretensioner of safety belt.
活塞作为发动机核心部件，它的设计是否合理直接关系到内燃机可靠性、寿命、经济性等。
Piston is a center part of Diesel so the reasonable design of piston directly relates to the reliability, lifetime and economic performance.
数字电路板作为系统的核心部件，负责整个软件算法和通讯等功能的实现，它的功能要求与稳定性至关重要。
As the core components of the system, digital circuit board is responsible for the entire software algorithms and communication functions.
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