玻璃组分 meaning in English

glass component
glass constituent
glass ingredient

Moreover , glass colors vary conspicuously according to different compositions
而且玻璃的颜色与玻璃组分的关系很明显。
In addition to availability of raw materials , other factors narrowing the choice of composition are glass color , workability , meltability , and sometimes , chemical durability of the glass
除了原材料的可获得性以外，其他因素也限制了玻璃组分的选择，如玻璃颜色、可加工性和可熔性，在某些时候，还需考虑玻璃的化学耐久性能。