Butterfly valve through the valve shaft rotation to drive the rotation of a disc-shaped disc, to open and close a valve, cut off from the main pipe and throttle with.

进口蝶阀是指通过阀轴旋转来带动一个圆盘形的蝶板的转动，达到开启与关闭的一种阀门，在管道上主要起切断和节流用。

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This paper introduces the epicyclic reduction arrangement applied in cutting drive mechanism in pipe jacking, analyses the construction and characteristics of epicyclic reduction arrangement.

介绍顶管掘进机截割传动装置所采用的行星齿轮减速器，论述行星齿轮减速器的结构特点。

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The paper gives the whole control system design of the in-pipe robot, which includes electro-magnet drive module, CPLD patulous module, wireless communications module, power module.

介绍了机器人控制系统的总体设计方案，包括电磁铁驱动模块、CPLD扩展模块、无线通信模块、电源模块等。

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Two pipe bomb type devices were later recovered from Clandeboye Drive and Cluan Place.

BBC: Fresh trouble at interface area

Two hours drive away in Kulgaon, TU Shenava faces similar problems at his pipe-making factory.

BBC: Cash flow drying up for Indian small firms

It was only a few months ago that DARPA initiated their ambitious Robotics Challenge that reserves a cash prize for a (probably) humanoid robot that can drive to a disaster area and perform several rescue functions including breaking through rubble and closing off a leaky pipe.

FORBES: DARPA's New Challenge: Increase Robotic Power Efficiency By 2,000 Percent