naturallyadv.自然地；天生地naturally occurring radioactivity天然来源的放射性naturally monopolistic industries自然垄断性产业naturally self-pollinated plant自然自花授粉植物naturally curved and twisted beam自然弯扭梁naturally cross-pollinated plant自然异花授粉植物naturally occurring mineral crystal自然矿物晶体Naturally he had been unfaithful.自然罗，他早就同别的女人勾勾搭搭。naturally individualized instruction自然分材教学naturally occurring radioactive substance天然放射性物质naturally occurring thymocyto-toxic autoantibody自然发生的胸腺细胞毒性自体抗体

1. In this paper the process of preparation of octa-potassium titanate whisker preforms by naturally sinking is introdueed.
   本文介绍了用自然沉降法制备聚八钛酸钾晶须预制件的生产工艺。