它们具有设计新颖、电路简单、结构合理、防振性好，维修方便等特点，其运行可靠性和主要技术指标已超过原进口产品。
They have the features of; new in design, simple in circuit, and with reasonable structure, well-vibration-proof and major technique norms have overtaken those importations.
经运行验证，控制系统完全能满足试验机的主要技术指标要求，并实现其主要功能。
Through operating proving, the main technical specification of the testing machine was satisfied and its main function was realized after the control system.
实际装车运行也表明，各项主要技术指标都达到了原pbl2制动机的要求。
Practical running operations show as well that the main parameters conform to the requirement of original PBL2 brake.
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