系列扩展 meaning in Chinese

expa ion in series
expansion in series

Several jewelry distributors expressed their willingness for long term collaborations in introducing the s . m . celestial jewelry to the valuables market in various countries
多位珠宝经销商愿意长期合作，将s . m .天饰系列扩展到不同国家的精品领域。
The proportional pressure / flow hybrid valve ( pq valve ) , which adjusts pressure and flow rate simultaneously , is increasingly adopted for the hydraulic control system in molding machine , due to its advantages of high integration degree , stable and energy - saving performance . based on the analysis of various types of pq valve , this paper investigates the control performance of the byl 16 series valve , including the static and dynamic characteristics
本文在综合了目前国内外各种pq阀技术现状的基础上，分析研究了由浙江大学研制的byl系列pq阀的静、动态性能，并结合仿真和试验研究，提出了改善pq阀静动态性能的机理和有效措施，为今后实际工程应用和系列扩展设计提供了很好的理论依据。