釉质是身体中最硬的组织最富于钙质.Enamel is the hardest structure of the body and the richest in Calcium.洗牙会对牙釉质造成伤害 吗 ?Does the meeting that wash a tooth cause harm to enamel?采用维氏显微硬度仪测定经饮料浸泡后牙釉质表面显微硬度的变化.The enamel surface microhardnes...
She is without question the craziest person I've met to date.她无疑是我到目前为止所遇到的最疯狂之人。The last day of the carnival is always the craziest.嘉年华会的最后一天总是最为疯狂.What's the craziest things you've ever done in the name ...
Trace element mixes serve as insurances.微量元素只是作为一种保障措施.First of all, some doctors don't participate in some insurances by definition.首先, 一些医生 肯定 不会参加某些保险.These five kinds of insurances all exist the certain problem....
An imbalance in certain chemicals leads to disturbances in the brain's function.某些化学成分失衡会道致大脑功能的紊乱.Increased recruitment of women engineers will help correct the gender imbalance in the profession.多聘请女工程师有助于平衡这一职业中存...