Valve positioner is a typical nonlinearity system.
阀门定位器是典型的非线性系统,难以建立精确的数学模型。
参考来源 - 基于HART协议智能阀门定位器的设计与实现This string is mainly constituted by compensator, hydraulic anchor, packer, water distribution packer, mechanical positioner and the ball at the bottom, the structure of which can be classified as casing-protection type and non-casing-protection type.
该管柱主要由补偿器、水力锚、封隔器、配水封隔器、机械定位器和底球等组成,根据现场实际情况,管柱的结构可分为套管保护管柱和非套管保护管柱2种形式。
参考来源 - 集成细分注水管柱研究与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
同义词： rotary actuator
以上来源于: WordNet
Items, which were donated for the study, included car seats, changing table pads, sleep positioners and infant bath mats.
为这项研究捐赠的物品包括汽车座椅、换尿布台垫、睡眠固定垫和婴儿浴垫。
This paper deals with a statistical approach to the average power consumption of the positioners in magnetic disc drives.
本文讨论了磁盘存贮器磁头驱动定位装置的统计平均功耗问题；
The basic principles, types and common construction of the positioners are provided for the purpose of design in this paper.
本文介绍该机的基本要求、类型和常见的结构，为专用工件位置变换机的设计提供参考依据。
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