para-tillite

例句：

1. 1. The mineral para-tillite is used in the production of glass.
   偏钛酸盐矿物用于生产玻璃。
2. 2.The coating on the surface of the para-tillite crystals is very smooth.
   偏钛酸盐晶体表面的涂层非常光滑。
3. 3.The use of para-tillite as a pigment has increased in recent years.
   近年来，偏钛酸盐作为颜料的使用有所增加。