natural to对 ... 是自然的naturaladj.自然的；天然的；私生的natural protein天然蛋白质natural enemies天敌natural nuclide天然核素natural mutants自然变异natural channel天然河槽,自然渠道natural plastic天然塑料Natural setting自然环境natural analogy天然类比natural scenery天然景色Natural brucite天然水镁石

1. The flux is generally an organic salt dissolved in water and alcohol mixture.
   助熔剂通常是一种溶于水和酒精中的有机盐混合物。
2. Melting behavior of silica flux in the converting process of high grade copper matte was investigated.
   研究了高品位铜冰铜转炉吹炼石英熔剂熔化行为。