1) ∏ type roof beam
∏型顶梁
2) type-π of metal cap
金属π型顶梁
3) π type steel caving
π型钢梁放顶煤
1.
By comparation of the basic performance between the BDY sliding hudraulic support with paralleling top beams and π type steel caving technology,the understanding of BDY hudraulic supports with paralleling top beams was raised.
通过对BDY型并联顶梁滑移液压支架与π型钢梁放顶煤工艺基本性能的比较,提高了对BDY并联顶梁液压支架的认识,使该支架得到了更好的应用并发挥效能,实现了煤矿的安全生产。
4) canopy
[英]['kænəpi] [美]['kænəpɪ]
顶梁
1.
Light type caving coal hydraulic support structural characteristic and discussion on canopy structural design;
轻型放顶煤液压支架结构特点和顶梁结构设计的探讨
2.
Detailed the problems and disadvantages of the common hydraulic support'side flap,and put for- ward to a feasible method,designed the mechanism of no side flap canopy.
阐述了几种常见液压支架侧护板存在的问题和不足,提出了一种切实可行的解决措施,即设计了一种无活动侧护板的顶梁。
6) top beam
顶梁
1.
The stress of the top beam of WS1.
7型液压支架的顶梁进行了应力测试,通过12 000多次的耐久性试验,得出各种试验工况下各测点的最大应力值,并对试验现象及测试结果进行了分析。
补充资料：顶梁骨
1.即顶骨。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条