Secondly there is error between the thread roll angles of thread rolling die and drill rod.

滚丝轮螺纹和钻杆螺纹的螺旋角有误差。

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The arrangement of the wedge rolling die was described, and the design and calculating procedure for the wedging zone, spreading zone and finishing zone were stated.

并对楔形横轧模具的布置以及楔形横轧模具的楔入段、展开段和精整段的设计计算过程作了介绍。

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Mould and equipments : Die-casting mould, Low pressure casting mould, Gravity casting mould, Sand casting mould, Finish cast die, Stamping mould, Forge rolling die mould and so on.

模具及仪器类：压铸模具、低压铸造模具、重力铸造模具、砂型铸造模具、精铸模、冲压模、辊锻模等。

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SUVs' occupants are three times more likely to die from their vehicle rolling over than are the occupants of saloon cars.

ECONOMIST: America's favourite mode of transport is under attack

"It's important to stress once again that without imposing the extra health and safety measures, which all come at a considerable cost, the Cooper's Hill Cheese Rolling Event will not go ahead and eventually the tradition would die, " Mr Jefferies said.

BBC: Ticket prices for new cheese rolling festival announced