Involute toothing gears.

(Horology.

Finally, the tumor enters its final, shrunken state (called the involuted phase), after which it will never regrow.

最后，退进入它最后阶段，缩小阶段（叫做退化完成阶段），在这之后，就不继续生长。

Mould design of PU hydroclone by involute feeding is introduced.Practice proves,this mould structure is reasonable and the product is took out expediently,it gains marked economic benefits.

介绍了渐开线给料旋流器进料体具设计,实践证,具结构合理,脱方便,有一定经济价值。