Silicon is a hard, brittle material registering 72.6 on the Rockwell " A " hardness scale.硅是硬而脆的材料,根据Rockwell “ A” ” 硬度分度测值为72.6.Actually, I need to get to Rockwell Falls.事实上, 我必须去洛克威尔瀑布市.Good morning, Rockwell company. ...
黄油、人造黄油和多脂鱼都含有丰富的维生素D。Butter, margarine, and oily fish are all good sources of vitamin D.可以买一种含蜂王浆、花粉和维生素C的配方产品。You can buy a formulation containing royal jelly, pollen and vitamin C.肝脏和肾脏富含维生素A。Liver and kidney are part...