major element
主要元素
主量元素
主元素组成
主成分元素
大量元素
常量元素
多量元素
主元素
多量养分
成岩成矿
要素
主元
The major element of steel
Minor Element Geochemistry
balances of oxygen element and carbon element
finite element and infinite element coupling model
finite element infinite element
the coupled element free Galerkin and finite element method
the coupling element free Galerkin and finite element method
(the)medical cost social pool for major diseases
11th Five-Year Plan national major scientific and
a major tree planting drive