k-o

Owing to the addition of K _ 2 O , mica and fluorapatite are crystallized simultaneously in broad temperature ranges.

由于K2O的添加, 云母和氟磷灰石在一个较宽的温度范围里同时从玻璃中析出.

That film is O . K . for children.

那片子适合孩子们看.

Pr ~ ( 3 + ) doped bismuth tellurite glass with molar composition 7.5 Li _ 2 O-7.5 K _ 2 O-5 BaO-5 Bi _ 2 O _ 3-75 TeO _ 2 were prepared.

制备了Pr~ ( 3+ ) 掺杂7.5Li_ 2O-7.5K_2O-5BaO-5Bi_2O_3-75TeO_2铋碲酸盐玻璃.

Chemist: O . K . this is your herbal medicine.

药剂师: 好了,这是你所需要的中草药.

The results show that H 2 O 2 and K 2 S 2 O 8 can photodegradate DDVP betterly.

结果表明:H2O2、K2S2O8对DDVP的光降解具有良好的效果.