1.It is suggested that the specific speed would be replaced by diametric ratio,and the new nameplate would be used.

1.建议转速应为直所取代,并启用水斗式水轮机新铭牌。

2.Therefore we point out a new method of testing fragile material's strength of extension.That is to say we can measure the disk's strength of extension by pressing in its diametric.

2.从而对性材料抗拉强度的测定提出了一种新的法,通过对圆盘沿直对心受压试验可测出其抗拉强度。