tail beam of expansion link
tail beam of expansion link
伸缩连杆尾梁
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The key of settling the difficulties of supporting and caving is to develop and adopt the new style hydraulic caving supports with tail beam of expansion link combined by above 2 new technologies.
全面解决支护和冒放等难题，关键在于开发和采用由上述两项新技术结合而成的新型放顶煤液压支架-伸缩杆尾梁放顶煤液压支架。
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