An east London school has set a precedent by fining pupils who break the rules.伦敦东区的一所学校开创了对违反校规的学生处以罚金的先例。Upward - fining channels may occur in a wide range of environments, from submarine canyon to alluvial fan.向上变细的水道...
Gypsum may crystallize on the surface of the phosphate rock particles.石膏会在磷矿颗粒的表面上结晶.Hopeite is a zinc phosphate.磷锌矿主要成分是磷酸锌.I looked at the bottle it was Codeine Phosphate.我看了看它的底部,上面标着可待因磷酸盐.Aim : To synthesize carboxy...