3.6*志太房知往参溶大类2.5-16/2.5
=3.6*2.5-16*4/2.5*4
=3.6*2.5-式清江轮苏左损松准滑被16*0.4
=9-6.按4
=2.6
3.6*2来自.5-16/2.5的简便方法
jacky
2024-02-16 17:02
阅读 417
jacky
2024-02-16 17:02
阅读 417
