The small variation of the steel-wire's length can be obtained by measuring the displacement of leveling bench with micrometer.
用螺旋测微器测量水准仪平移的距离,从而得到钢丝长度的微小变化值。
2
The feasibility of the application of microarc oxidation technique to the treatment of inner surface of steam cylinder was studied by measuring the change of inner diameter, roughness and bench test.