fractional melting meaning in Chinese

分步熔化
分离熔融作用

The mineral chemistry amd elemental variations in whole rocks can be ascribed to results of partial melting of various degrees . according to the fractional melting model , the partial melting degree for the iherzolites is less than 5 percent , and about 7 to 20 percent for harzburgites
全岩及矿物的主量元素的成分变化主要受部分熔融程度的控制，分异熔融模型获得的二辉橄榄岩的部分熔融程度5 ，方辉橄榄岩部分熔融程度在7 - 20之间。
High - mg volcanic rocks approach the primitive mantle compositions , and their magmatic source is close to the composition of bse , derives from the lower mantle and formed by this type - mantle rocks " fractional melting highly ( > 25 % ) . high - mg volcanic magma , formed in the axis of the emei mantle plume , underwent the crystallization differentiation of olivines and some pyroxenes ; some olivines reflect fair cumulus crystallization
高镁火山岩接近于原始岩浆的组成，岩浆源区与地球平均成分bse的成分特征相近，起源深度为下地幔，为该地幔岩较高程度的部分熔融( 25 )而形成的。高镁火山岩处于地幔柱的轴部，经历了橄榄石及一定程度的辉石分异结晶，并且橄榄石显示出一定的堆晶作用。