The valve axis adopt stainless steel, it has good abradability and anti - causticity.阀杆采用不锈钢, 有良好的抗腐蚀性,抗擦伤和耐磨性能.Especially, the measure of some causticity liquid is very difficult using the old flow meter.特别是工业中对一些具有腐蚀性的...
To answer this question, we need to plot trajectories of principal stresses.为了回答这个问题, 我们尚须画出主应力迹线图.The subject of orthogonal trajectories remained dormant.正交轨线的问题一直处于沉寂状态.The network of lines now conforms closely with a ...