The half-section mechanized shield with inserted cutters is a machinery used for constructing the upper half-section of the metro tunnels.
半断面插刀盾构是铁道部隧道工程局与有关单位共同研制的用于地铁隧道上半断面施工的机械，文章介绍它的结构和应用问题。
The half-section mechanized shield with inserted cutters is a machinery used for constructing the upper half-section of the metro tunnels.
半断面插刀盾构是铁道部隧道工程局与有关单位共同研制的用于地铁隧道上半断面施工的机械，文章介绍它的结构和应用问题。
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