external diameter造句怎么写
- 造句
- 关注:1.5W次
This paper deals with a caculating method of total pressure and efficiency of boiler induced draft fan when the fan's external diameter is extended.
This mild-steel bolt has all threaded portions over the whole length, and its external diameter is 16 mm.
- 文章版权属于文章作者所有,转载请注明 https://zhongwengu.com/sentence/zwpgl.html