方程类型
vortex air compressor is made up of two double function equation type line dynamic and static vortex plate mesh with each other and become.
涡旋空气压缩机是由两个双函数方程型线的动、静涡盘相互啮合而成。
the variety of equation type and multiple spike type were more economic than weighty spike type under general production condition, . . .
但在目前的生产条件及生产水平下则是以均衡型、多穗型品种较为经济,且易获得高产稳产。
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