Ladder feet are in good condition, e. g. rubber tips on metal rolling ladders. "Safe-Hi" feet on extension ladders.
梯子脚底是否有很好的止滑垫片。如金属梯子脚底的橡胶，延伸梯的防滑垫片。
There are two types of Cold Rolling Mills operates, which are 6 hi Cold Rolling Mill and 4 hi Cold Rolling Mill.
有冷轧制造工厂工作的二类型，是6嗨冷轧制造工厂和4嗨冷轧磨工。
Structural characteristic of 20-hi rolling mill, roll configuration, working concept, the rolling force analysis, derivation and studying results are discussed this paper.
对20辊轧机构造特点、辊系配置、工作原理、轧制压力的分析、推导、计算进行了研究。
Introduced the principle, structure and operation mode of HS system in6 - hi cold rolling mill, and also set forth its important role in the control system of cold rolling mill.
介绍六重冷轧机上HS系统的原理、构及工作方式，阐述其在冷轧机控制系统中的重要作用。
Introduced the principle, structure and operation mode of HS system in 6-hi cold rolling mill, and also set forth its important role in the control system of cold rolling mill.
介绍六重冷轧机上HS系统的原理、结构及工作方式，阐述其在冷轧机控制系统中的重要作用。
Introduced the principle, structure and operation mode of HS system in 6-hi cold rolling mill, and also set forth its important role in the control system of cold rolling mill.
介绍六重冷轧机上HS系统的原理、结构及工作方式，阐述其在冷轧机控制系统中的重要作用。
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