holdup hold down roof是什么意思

网络释义

用法例句

Stability analytical method of the suspended hydraulic topping prop

悬浮式液压切顶支柱的稳定性分析方法

centre plunger hydraulic lift

柱塞直顶式液压电梯

hydraulic plunger elevator

液压柱塞直顶式升降机

A research on the corrosion protection technology of Hydraulic support jacks

液压支架立柱、千斤顶防腐技术的研究

Brief Analysis of Type and Structures of Two-legged and Four-legged Top Coal Caving Hydraulic Powered Support

两柱与四柱放顶煤液压支架架型及结构浅析

Application of Entirety Asssembly Bar Suspension Hydraulic Timber in Sanjing Changcheng Coal Mine

整体组合顶梁悬移液压支架在长城三井的应用

Research on Leakage of Prop Jack in Powered Support and Settlement Measure

液压支架立柱千斤顶密封泄漏研究及解决措施

Research on Main Technical Problems in4-prop Top-coal Caving Powered Support

四柱放顶煤液压支架主要技术问题研究

Analysing Mechanics Character of Special Canopy and Two-legged Caving Power Support

支顶支掩式掩护式放顶煤液压支架的力学特性分析

Practice of Large Mining Height Hydraulic Prop Supporting Face

大采高单体液压支柱工作面支护型式实践

Study the technique of caving hanging roof in the condition of hard roof of room-and-pillar mining.;

房柱式开采坚硬顶板条件下悬顶放顶技术研究

Study on Adaptability of Shield Support in Large Cutting Height Working Face;

两柱掩护式大采高强力液压支架适应性研究

Research and Application of Web-based Mold Resources Library

液压支架双伸缩立柱失效形式的研究与分析

Calculation of Temperature and Pressure from the Graphite Suspension Irradiated by Laser;

激光辐照石墨悬浮液的温度压力计算

integrated hydraulic hitch system

整体式液压悬挂系统

hydraulic hitch system with unloading function

卸荷式液压悬挂系统

hydraulic hitch system with throttle control

节流式液压悬挂系统

hydraulic offset excavator

导轨悬挂式液压挖掘机