Along with the lowering of the load capacity of the derrick, the strain parameters of the structure change accordingly.
与承载能力降低的同时，井架结构的应变参数也发生相应的变化。
The application and effect of US Derrick overlapping high frequency vibrating fine screen in the transformation for capacity expansion of System 321 in Ekou Iron Concentrator are described.
介绍了美国德瑞克重叠式高频振动细筛在峨口铁矿选矿厂321系统扩能改造中的应用和效果。
The hoisting capacity of that gin pole (girder pole, guy derrick) is sixty tons.
那个起重抱杆（格状抱杆、转盘抱杆）的起重能力为60吨。
The safety bearing capacity test shows that, the upper portion of the derrick is an area loaded heavily, and the measured stress on the derrick stand is linear to the hook load.
由井架安全承载试验结果可知：井架上段为受力较大部位；井架立柱测试应力与大钩作用载荷呈线性关系。
The safety bearing capacity test shows that, the upper portion of the derrick is an area loaded heavily, and the measured stress on the derrick stand is linear to the hook load.
由井架安全承载试验结果可知：井架上段为受力较大部位；井架立柱测试应力与大钩作用载荷呈线性关系。
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