| 1. | Precast pier - head segment erection with lifting frame
用吊架安装桥墩柱顶预制构件 |
| 2. | Precast concrete segment erection with mbec lifting frame
Mbec吊架-安装预制桥面构件 |
| 3. | Segment erection with mbec lifting frame
Mbec吊架-安装预制桥面构件 |
| 4. | Precast segment erection with lifting frames
用吊架安装预制构件 |
| 5. | Un - loading precast segment from barge with segment lifting frame
用吊架把预制构件由趸船吊上临时桥 |
| 6. | Pierhead segment lifting frame at pier 16
C1及c2桥建造之全景 |
| 7. | Concrete sleeper lifting frame
混凝土轨枕吊架 |
| 8. | Construction of turnover formwork in reinforcement chimney hydraulic lifting frame
钢筋混凝土烟囱液压提升架翻模施工 |
| 9. | In view of the character of drum lifting frame , invariable value and switch control hydraulic transmission system , this paper analyzes reappearing controlling character of memory program controlling - predicted control results
摘要针对采煤机滚筒调高机构的特点，即定量、开关式控制液压系统，分析了记忆程控预知控制结果的再现控制的特征。 |
| 10. | Static mathematic model of drum accommodation and control is presented , and instruction model control strategy of sample intervals is presented based on differences between characteristic equations of lifting frame and characteristic equations of top and bottom board change among the sampling spots , the rules of this method are few , simple , easy to operate and meet controlling demands
给出了滚筒调控静态数学模型，并根据调高机构的调控特征方程与采样点间顶底板变化特征方程的差异，给出了在其采样区间内的指令式控制策略，其方法的规则条日少、简单易运算、符合实际控制要求。 |
