welded turning rolls

例句：

1. 1. The welded turning rollsare used to make the metal parts smoother.
   焊接的卷筒用于使金属部件更光滑。
2. 2. The welding process requiresprecise control of the temperature and pressure.
   焊接过程需要精确控制温度和压力。
3. 3. The welded turning rolls are essential for theproduction of high-quality steel products.
   焊接的卷筒对于生产高质量的钢铁产品至关重要。