The new progress about twin—screw extruders and control technology in reaction extrusion line are described. Some applications of viscometer in this processing technology are introduced too.

介绍双螺杆挤出机的最新进展以及反应性挤出生产线控制技术开发动向；详述粘度计在反应性挤出工艺中的应用。

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This paper introduces briefly the structure, hydraulic system and control principle of a testing twin plunger hydraulic evelator.

本文对双缸液压电梯的结构形式、液压系统和控制原理作了简要分析。

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Emulsion lubrication system, rod quenching device, twin-coiler, line electric control, etc.

乳化液系统，连续淬冷装置，双筐收杆。

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He won the long-term lease to control the twin towers.

WSJ: New Hitch in Ground Zero Plans: No Takers

Taking this traditional idea of using air friction and refining it to control the speed of automatic winding, Urwerk has replaced the traditional rotating mechanisms of the past with miniature twin turbines that can be seen spinning on the back of the watch and are connected to the rotor.

FORBES: Jackie Chan, Kwon Sang-Woo and Urwerk Star in Chinese Zodiac