It has synchronous grouting system, segment erectingsystem and foam injecting system.
具有同步注浆系统、管片安装系统和泡沫注入系统；
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Last but not least, the HS 855 HD has an innovative self-loading and fast erectingsystem, so that a second crane is not needed for the unloading or erecting work.
Modern theories of multi-body system dynamics are used to build the dynamic models with clearance of large equipment erectingsystem driven by two oil cylinders side-by-side.