查询词典 pit prop

Prop technique on use of anchor rod with cement mortar for pit roof suporting was adopted After put in practice good results has been achieved.

通过深入的调查研究，分析其产生的主要原因，提出采用水泥砂浆锚杆固帮的技术，并在实践应用中取得较好的效

Comparatively, the effect of cage is more than that of pit prop.

相比较而言，罐笼对电磁波截止频率影响最大，支护立柱影响最小，机车对电磁波影响的范围最大。

The effect of metallic pit prop on transmission characteristics in tunnel is studied.

针对矩形巷道中由于金属支护立柱的存在而带来的分叉不连续问题，提出用分叉波导模型并用模式匹配法和多模传输理论分析传输特性。

Article 9 The capital drawn according to section 1 (5) Article 8 of the Forestry Law must be specially used for the timber forest such as planting pit prop and the forest used for making paper and etc., and shall not be embezzled.

第九条 依照森林法第八条第一款第项规定提取的资金，必须专门用于营造坑木、造纸等用材林，不得挪作他用。

A fork waveguide model is proposed and the mode matching and multi-mode network technique are used to analyze the transmission characteristics of rectangular tunnel with metallic pit prop.

针对矩形巷道中由于金属支护立柱的存在而带来的分叉不连续问题，提出用分叉波导模型并用模式匹配法和多模传输理论分析传输特性。

A fork waveguide model is proposed and the mode matching and multi-mode network technique are used to analyze the transmission characteristics of rectangular tunnel with metallic pit prop.

针对矩形巷道中由于金属支护立柱的存在而带来的分叉不连续问题，提出用分叉波导模型并用模式匹配法和多模传榆理论分析传榆特性。

The change of the reflection coefficient of dominant mode with working frequency, the row number of metallic pit prop, and pit prop diameter are obtained, respectively.

用模式匹配法求出不连续面的阻抗变换公式，利用多模传输理论求出整个不连续问题的散射参数，得出了均匀区域的基模电压反射系数与工作频率和支护立柱排数及立柱直径的关系。

Using finite-element method the effects of long objects, such as cage, train and metal pit prop, on electromagnetic wave cutoff frequency is researched systematically in regular tunnels, and it is shown that the long metal objects lower TE wave cutoff frequency and raise TM wave cutoff frequency.

利用有限元方法系统地研究了机车、罐笼、金属支护立柱等长列金属物体对井下规则隧道中电磁波截止频率的影响，可知长列金属物体的存在使TE波模截止频率降低，而使TM波模截止频率升高。

Selection of plan for prop pipelining with densely arranged large diameter pipes, working pit support , some problems and technical difficulties during prop pipelining were introduced, taking Laoshan water discharge project (Second modification for Chenglinzhuang Road) as an example.

以天津市程林庄路二期改造———崂山道排水工程为例，介绍了密排大口径管道顶管施工方案的选择及工作坑支护施工、顶管施工过程中遇到的一些问题和技术难点，并给出了相应的处理措施。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。