Precision CRF (Cold roll forming) is a kind of non-cutting technology, which integrates the metal plastic forming and rolling forming.

精密冷滚轧是金属塑性成形与轧制成形相结合的一种无切削加工工艺。

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The deformation and flow of metal in the process of roll forging are much different from those of ordinary die forging, So are the design of its technology, preliminary forming dies and dressing dies.

辊锻过程中金属变形及流动，与一般模锻工艺相比存在较大的差异，因而其工艺设计及初成形道次模具、整形模具设计也不同于常规模锻工艺。

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Also analyzed are the deformation characteristics of the metal when conical roll is used and there exist both toe Angle and feed Angle.

分析了采用锥形轧辊，在辗轧角和送进角同时存在时金属的变形特点。

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It mixes the sounds of hard punk and heavy metal rock and roll.

VOA: special.2009.11.06

The 1984 film, This is Spinal Tap, is an American rock and roll mock documentary about about the heavy metal music band, Spinal Tap - "one of England's loudest bands".

BBC: Chris O'Dowd to star in Spinal Tap-style series on