The structure, operating principle and safe protection ol chips conveying system for spinning production line were analysed in this paper.
本文分析了供送纺丝生产线的切片输送系统的结构、工作原理、安全保护等。
The relative characteristics of the pseudo code are analyzed. With discussion on the principle ol ultrasonic level measurement based on pseudo code technology, the level measuring system is designed.
分析了伪随机码的相关特性，讨论了基于伪码相关技术的超声波液位测量原理，设计并完成了液位测量系统。
High activity polyol is required for system cured by ol-chain-extender, but this system is easily influenced by ambient moisture and its physical properties are poor.
醇固化体系必须用高活性聚醚，但是固化体系受环境水分的影响比较大，产物性能比较差。
High activity polyol is required for system cured by ol-chain-extender, but this system is easily influenced by ambient moisture and its physical properties are poor.
醇固化体系必须用高活性聚醚，但是固化体系受环境水分的影响比较大，产物性能比较差。
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