发明授权
US3696573A Pressure container prestressed concrete or the like 失效
压力容器预制混凝土或类似物

Pressure container prestressed concrete or the like
摘要:
A pressure container is wound with special bands of wires in superposed groups and the wires are prestressed and clamped to the container by means of superposed axial strips on the container with radial bolts engaging the walls of the container.
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