A hydraulic drive system of cutter head in shield tunneling machine was designed, which is open type hydraulic system and controlled in open-ring.

设计了一个盾构掘进机的刀盘驱动液压系统，该系统是开式液压系统，应用电液比例控制技术实现了泵排量实时调节。

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Treatment measures in underground stratum reinforcement and open space with pressure to change cutter and tool.

地下处理措施中的地层加固方案和带压开舱换刀方案。

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People who can explain how clarity in visual language may be the explanation for boob-plate armor and open jackets and pizza-cutter swords.

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Plugging the proposals into a spreadsheet, he started listing the tools needed to produce each one: A CNC milling machine for an updated, open-source letterpress printer, a laser cutter for a sensor warning pilots of nearby planes.

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