alkaline earth造句

1、The alkaline earth used therein is salt compound of magnesium and calcium.
所采用的优选的碱土是镁和钙的盐和化合物。

2、By two alkyl halide with alkali metal or alkaline earth metal polysulfides from condensation.
由二卤代烷与碱金属或碱土金属的多硫化物缩聚而成。

3、The calculated results of energy gap on alkaline earth mixed halides are reasonable.
对碱土金属复卤化物的能隙进行了计算，结果合理。