casting labial bar

例句：

1. 1. The casting labial bar is used to shape the metal into a desired form.
   铸造模具用于将金属塑造成期望的形状。
2. 2. The molds are essential for producing high-quality products.
   模具对于生产高质量产品至关重要。
3. 3. The casting process involves heating the metal and shaping it using the molds.
   铸造过程涉及加热金属并使用模具对其进行成型。