operation sign是什么意思

用法例句

Discussion on Application of Hot Aluminous Weldment Technology in Metallurgical Crane Tracks;

铝热焊接技术在冶金行车轨道上的应用探讨

Study to the Approach to Transfiguration and Repair for Crane Girder;

行车大梁变形测量及修复方法探讨

In smelting process,large amount of cables of crane working in hot environment are likely to reduce its useful-life that can't be known.

针对炼铁炼钢生产中大量行车工作在高温环境,电缆容易老化而又无法获取其剩余寿命的问题,选用半导体测温元件AD590在线监测电缆运行温度,采用直接测定和神经网络预测2种方法计算电缆剩余使用寿命,优化电缆更换周期,实施部分电缆更换。

The article has introduced the layout of roadway and equipment in charging chamber and demonstrated the applicable prospect of traveling crane.

介绍了告成矿井下充电硐室的巷道布置、设备布置,行车及其承载梁、跑道的安装情况,并对行车运行情况进行了阐述,展示了行车在煤矿井下的应用前景。

briefly introduces the characteristics,types and composition of the traveling crane air-condition;analyzes the thermal environment both in and outside the traveling crane s electrical rooms,which is based on the data from a field survey in an iron and steel phant.

介绍了行车空调的特点及其分类与组成 ;根据对某钢铁企业炼钢车间行车电气室空调系统的实测数据 ,分析了行车电气室内外的热环境状况。

This thesis de-scribes the realization technologies of the electrical control system i n the industrial traveling crane whi ch has been designed and made all by ours elves.

文中论述了我们自行设计研制的真实控制对象———工业行车的电气控制系统的实现技术。

The paper introduces formerly questions about operational mod of travelling cranes of main and auxiliary wells, advances the frequency conversion reform,gives the system-map of the main-loop, generalizes the main design characteristic and effect after reform.

煤矿主副井行车位于井塔的最上层 ,在吊运重物时井架摇晃造成安全隐患。

24 travelling crane in the Steelworks gave rise to bigger influences for safe production in the plant.

随着1#~3#转炉的挖潜及4#转炉出钢量的增加,炼钢厂浇二跨24#行车额定负载能力不足的隐患已经对炼钢厂的安全生产造成了较大影响。

With the development of efficient and the demand of lager scale and higher velocity, the travelling crane needs to be more intelligent with high technology.

行车是大型工业领域的重要设备。