Four-link portal crane using the best combination of optimized boom system, with horizontal small gap, amplitude stable, low power consumption.
四连杆门座式起重机采用最佳优化的组合臂架系统，具有水平落差小、变幅平稳、功耗低的特点。
The gap in the opening of the outer case can be adjusted at random in certain amplitude, which is convenient for the built-in installation of a sealing ring.
外壳开口处的间隙在一定幅度内可随意调节，方便了密封圈的内置安装。
The probability distribution curve of the fluctuating pressure amplitude on the side wall of narrow-gap energy dissipater coincides with the normal probability curve.
窄缝消能工边墙的脉动压力振幅概率分布符合正态概率曲线。
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