1) strength of roof
顶板强度
2) intensity of roof weighting
顶板来压强度
3) roof stimulating
顶板强化
1.
On the basis of series of researches on the features of the coal-body structure and roof of the coal beds on low per- meability coal seams, development options on CBM are advanced the roof stimulating carry on low permeability coal seams.
由开采解放层防治矿井煤与瓦斯突出的机理和作用得到启示，在详细研究了低渗透性构造煤发育区煤体结构和煤层顶板特征的基础上，提出了用煤层顶板强化法进行低渗透性煤储层煤层气地面开发的方案。
2.
Therefore, three methods such as fracturing, acid treatment and roof stimulating have been proposed so as to deal with the variety and complicated geological problems of the coalbed methane.
本文针对煤层气储层的多样性和复杂性，提出了三种强化开发方案：压裂、酸化和顶板强化。
4) roof crush strength
顶压强度
1.
Then the tests on the roof crush strength of a truck cab are conducted,aiming at the requirements of the regulation of Cab Occupant Protection for Commercial Vehicles to be enforced soon and corresponding export authentication.
总结了货车常见事故类型,回顾了具有较大影响力的货车被动安全法规;针对我国即将实施的《商用车驾驶室乘员保护》法规以及出口认证的需求,进行了某型货车驾驶室顶压强度试验,并在此基础上进行了仿真分析对比。
5) stiffening rib
顶板加强肋
6) span of headboard
顶板跨度
补充资料：表光合强度(见光合强度)
表光合强度(见光合强度)
forecast of sowing or transplanting time
b iaoguanghe qiangdu表光合强度见光合强度
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