什么是同化、异化和换位?
Reduction - metathesis method for preparation of strontium carbonate from celestite is developed.提出还原- 复分解法制备碳酸锶的新工艺。
In addition syllable metathesis within a word prefers the interchange between stressed syllable and an syllable.而且,同一个字内常见一重一轻的音节互换,少有二个非重音节互换。